List of publications
Department of Mesoscopic Physics
Department of Quantum Information
Department of Physics of Nanostructures
Department of Theory of Condensed Matter
2026 |
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| 401. | Konrad J. Kapcia, Victor Tkachenko, Flavio Capotondi, Alexander Lichtenstein, Serguei Molodtsov, Przemysław Piekarz, Beata Ziaja Electronic mechanism of sub-100-fs demagnetization induced by a femtosecond light pulse Scientific Reports, 16 , pp. 14705, 2026. @article{Kapcia2026, title = {Electronic mechanism of sub-100-fs demagnetization induced by a femtosecond light pulse}, author = {Konrad J. Kapcia and Victor Tkachenko and Flavio Capotondi and Alexander Lichtenstein and Serguei Molodtsov and Przemysław Piekarz and Beata Ziaja}, doi = {10.1038/s41598-026-51949-2}, year = {2026}, date = {2026-05-11}, journal = {Scientific Reports}, volume = {16}, pages = {14705}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 400. | Sebastião Antunes, Flavio Capotondi, Konrad J. Kapcia, Vladimir Lipp, Beata Ziaja Ultrafast change of optical polarization predicted for XUV-irradiated diamond Optics Express, 38 (4), pp. 15233-15243, 2026. @article{Antunes2026, title = {Ultrafast change of optical polarization predicted for XUV-irradiated diamond}, author = {Sebastião Antunes and Flavio Capotondi and Konrad J. Kapcia and Vladimir Lipp and Beata Ziaja}, doi = {10.1364/OE.585149}, year = {2026}, date = {2026-04-15}, journal = {Optics Express}, volume = {38}, number = {4}, pages = {15233-15243}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 399. | Piotr Majek, Ireneusz Weymann Spin-dependent signatures of Majorana modes in thermoelectric transport through double quantum dots Phys. Rev. B, 113 , pp. 165116, 2026. @article{Majek2026, title = {Spin-dependent signatures of Majorana modes in thermoelectric transport through double quantum dots}, author = {Piotr Majek and Ireneusz Weymann}, url = {https://journals.aps.org/prb/abstract/10.1103/hbln-hk8k}, doi = {10.1103/hbln-hk8k}, year = {2026}, date = {2026-04-10}, journal = {Phys. Rev. B}, volume = {113}, pages = {165116}, abstract = {We present a comprehensive theoretical analysis of the spin-dependent thermoelectric properties of a double quantum dot system coupled to a topological superconducting nanowire and ferromagnetic leads. The study focuses on the behavior of the Seebeck coefficient and its spin-resolved counterparts, with calculations performed by means of the numerical renormalization group method. We investigate the low-temperature transport regime, where a complex interplay between the two-stage Kondo effect, the ferromagnet-induced exchange field, and the Majorana coupling occurs. We demonstrate that thermoelectric measurements can reveal unique signatures of the Majorana interaction that are challenging to isolate in conductance measurements alone. It is shown that the exchange field fundamentally alters the thermoelectric response, leading to a rich, nonmonotonic temperature evolution of the thermopower, which is driven by a temperature-dependent competition between the spin channels. Furthermore, we have identified qualitatively different regimes of spin thermopower generation, controlled by the interplay between the Majorana-induced asymmetry and the spin polarization of the leads. Finally, by connecting the system's thermoelectric response to the underlying transport asymmetries quantified by the conductance spin polarization, we provide a consistent and unified physical picture, proposing thermoelectric transport as a sensitive probe for Majorana signatures.}, keywords = {}, pubstate = {published}, tppubtype = {article} } We present a comprehensive theoretical analysis of the spin-dependent thermoelectric properties of a double quantum dot system coupled to a topological superconducting nanowire and ferromagnetic leads. The study focuses on the behavior of the Seebeck coefficient and its spin-resolved counterparts, with calculations performed by means of the numerical renormalization group method. We investigate the low-temperature transport regime, where a complex interplay between the two-stage Kondo effect, the ferromagnet-induced exchange field, and the Majorana coupling occurs. We demonstrate that thermoelectric measurements can reveal unique signatures of the Majorana interaction that are challenging to isolate in conductance measurements alone. It is shown that the exchange field fundamentally alters the thermoelectric response, leading to a rich, nonmonotonic temperature evolution of the thermopower, which is driven by a temperature-dependent competition between the spin channels. Furthermore, we have identified qualitatively different regimes of spin thermopower generation, controlled by the interplay between the Majorana-induced asymmetry and the spin polarization of the leads. Finally, by connecting the system's thermoelectric response to the underlying transport asymmetries quantified by the conductance spin polarization, we provide a consistent and unified physical picture, proposing thermoelectric transport as a sensitive probe for Majorana signatures. |
| 398. | Yi-Te Huang, Hsiang-Wei Huang, Jhen-Dong Lin, Adam Miranowicz, Neill Lambert, Guang-Yin Chen, Franco Nori, Yueh-Nan Chen Phys. Rev. Res., 8 , pp. 023084, 2026. @article{Huang2026, title = {Experimental simulation of postselected closed timelike curves for decoding scrambled quantum information}, author = {Yi-Te Huang and Hsiang-Wei Huang and Jhen-Dong Lin and Adam Miranowicz and Neill Lambert and Guang-Yin Chen and Franco Nori and Yueh-Nan Chen}, url = {https://link.aps.org/doi/10.1103/tm83-sxpm}, doi = {10.1103/tm83-sxpm}, year = {2026}, date = {2026-04-01}, journal = {Phys. Rev. Res.}, volume = {8}, pages = {023084}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 397. | Zhihao Xie, Adam Miranowicz, Zhenhua Li, Tao Li, Franco Nori Parallel distributed quantum gates for dual-species quantum emitters Phys. Rev. A, 113 , pp. 042628, 2026. @article{Xie2026, title = {Parallel distributed quantum gates for dual-species quantum emitters}, author = {Zhihao Xie and Adam Miranowicz and Zhenhua Li and Tao Li and Franco Nori}, url = {https://link.aps.org/doi/10.1103/lghw-qn1h}, doi = {10.1103/lghw-qn1h}, year = {2026}, date = {2026-04-01}, journal = {Phys. Rev. A}, volume = {113}, pages = {042628}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 396. | Aleksey Alekseev, Konrad J. Kapcia Charge-ordered states and the phase diagram of the extended Hubbard model on the Bethe lattice Physica A, 692 , pp. 131520, 2026. @article{Alekseev2026, title = {Charge-ordered states and the phase diagram of the extended Hubbard model on the Bethe lattice}, author = {Aleksey Alekseev and Konrad J. Kapcia}, doi = {10.1016/j.physa.2026.131520}, year = {2026}, date = {2026-03-30}, journal = {Physica A}, volume = {692}, pages = {131520}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 395. | Kuan-Yi Lee, Jhen-Dong Lin, Adam Miranowicz, Yueh-Nan Chen General Class of Functionals for Certifying Quantum Incompatibility Phys. Rev. Lett., 136 , pp. 120203, 2026. @article{rsx1-zvbp, title = {General Class of Functionals for Certifying Quantum Incompatibility}, author = {Kuan-Yi Lee and Jhen-Dong Lin and Adam Miranowicz and Yueh-Nan Chen}, url = {https://link.aps.org/doi/10.1103/rsx1-zvbp}, doi = {10.1103/rsx1-zvbp}, year = {2026}, date = {2026-03-01}, journal = {Phys. Rev. Lett.}, volume = {136}, pages = {120203}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 394. | Javid Naikoo, Ravindra W. Chhajlany, Jan Kołodyński, Adam Miranowicz Precision assessment in non-Hermitian systems: a comparative study of three formalisms New Journal of Physics, 28 (3), pp. 034508, 2026. @article{Naikoo_2026, title = {Precision assessment in non-Hermitian systems: a comparative study of three formalisms}, author = {Javid Naikoo and Ravindra W. Chhajlany and Jan Kołodyński and Adam Miranowicz}, url = {https://doi.org/10.1088/1367-2630/ae46cf}, doi = {10.1088/1367-2630/ae46cf}, year = {2026}, date = {2026-03-01}, journal = {New Journal of Physics}, volume = {28}, number = {3}, pages = {034508}, publisher = {IOP Publishing}, abstract = {Quantifying measurement precision in quantum systems is vital for advancing quantum technologies such as sensing, communication, and computation. The quantum Fisher information (QFI) sets the ultimate precision bound in Hermitian systems; however, extending this concept to non-Hermitian systems, even those with real spectra, poses conceptual challenges due to their non-unitary dynamics. We compare three probability-conserving approaches for evaluating QFI in such systems: (i) simple normalization, (ii) metric formalism, and (iii) master-equation framework. Although all three ensure probability conservation, they differ in physical interpretation and in how they quantify estimation precision. Our study is particularly motivated by previous studies that have shown that the simple normalization method for non-Hermitian Hamiltonian generated dynamics may lead to misleading or even unphysical conclusions for certain quantum information theoretic tasks. We emphasize, in this article, that the metric formalism naturally enables the use of standard Hermitian metrology tools in cases where it provides a coherent and physically consistent framework for non-Hermitian systems.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Quantifying measurement precision in quantum systems is vital for advancing quantum technologies such as sensing, communication, and computation. The quantum Fisher information (QFI) sets the ultimate precision bound in Hermitian systems; however, extending this concept to non-Hermitian systems, even those with real spectra, poses conceptual challenges due to their non-unitary dynamics. We compare three probability-conserving approaches for evaluating QFI in such systems: (i) simple normalization, (ii) metric formalism, and (iii) master-equation framework. Although all three ensure probability conservation, they differ in physical interpretation and in how they quantify estimation precision. Our study is particularly motivated by previous studies that have shown that the simple normalization method for non-Hermitian Hamiltonian generated dynamics may lead to misleading or even unphysical conclusions for certain quantum information theoretic tasks. We emphasize, in this article, that the metric formalism naturally enables the use of standard Hermitian metrology tools in cases where it provides a coherent and physically consistent framework for non-Hermitian systems. |
| 393. | Andrzej Grudka, Marcin Karczewski, Paweł Kurzyński, Tomasz P Polak, Jan Wójcik, Antoni Wójcik New Journal of Physics, 28 (2), pp. 024507, 2026. @article{Grudka2026, title = {Rabi transport and the other finite-size effects in one-dimensional discrete-time topological quantum walk}, author = {Andrzej Grudka and Marcin Karczewski and Paweł Kurzyński and Tomasz P Polak and Jan Wójcik and Antoni Wójcik}, doi = {10.1088/1367-2630/ae45c6}, year = {2026}, date = {2026-02-26}, journal = {New Journal of Physics}, volume = {28}, number = {2}, pages = {024507}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 392. | Zahra Jalali-Mola, Niklas Käming, Luca Asteria, Utso Bhattacharya, Ravindra W. Chhajlany, Klaus Sengstock, Maciej Lewenstein, Tobias Grass, Christof Weitenberg Anomalous Fluctuations of Bose-Einstein Condensates in Optical Lattices Phys. Rev. Lett., 136 , pp. 083401, 2026. @article{jalalimola2026, title = {Anomalous Fluctuations of Bose-Einstein Condensates in Optical Lattices}, author = {Zahra Jalali-Mola and Niklas Käming and Luca Asteria and Utso Bhattacharya and Ravindra W. Chhajlany and Klaus Sengstock and Maciej Lewenstein and Tobias Grass and Christof Weitenberg}, url = {https://link.aps.org/doi/10.1103/95pq-6r5g}, doi = {10.1103/95pq-6r5g}, year = {2026}, date = {2026-02-23}, journal = {Phys. Rev. Lett.}, volume = {136}, pages = {083401}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 391. | Marlena Dziurawiec, Jessica O de Almeida, Mohit Lal Bera, Marcin Płodzień, Maciej Lewenstein, Tobias Grass, Ravindra W. Chhajlany, Maciej M Maśka, Utso Bhattacharya Phys. Rev. B, 113 , pp. 075117, 2026. @article{bl2s-cv34, title = {High harmonic tracking of ultrafast electron dynamics across the Mott to charge-density-wave phase transition}, author = {Marlena Dziurawiec and Jessica O de Almeida and Mohit Lal Bera and Marcin Płodzień and Maciej Lewenstein and Tobias Grass and Ravindra W. Chhajlany and Maciej M Maśka and Utso Bhattacharya}, url = {https://link.aps.org/doi/10.1103/bl2s-cv34}, doi = {10.1103/bl2s-cv34}, year = {2026}, date = {2026-02-09}, journal = {Phys. Rev. B}, volume = {113}, pages = {075117}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 390. | Aritra Ghosh, Adam Miranowicz, Miloslav Znojil Symmetry, 18 (1), 2026, ISSN: 2073-8994. @article{Ghosh2026, title = {Twin Hamiltonians, Alternative Parametrizations of the Đyson Maps, and the Probabilistic Interpretation Problem in Quasi-Ħermitian Quantum Mechanics}, author = {Aritra Ghosh and Adam Miranowicz and Miloslav Znojil}, url = {https://www.mdpi.com/2073-8994/18/1/189}, doi = {10.3390/sym18010189}, issn = {2073-8994}, year = {2026}, date = {2026-01-01}, journal = {Symmetry}, volume = {18}, number = {1}, abstract = {In quasi-Hermitian quantum mechanics (QHQM) of unitary systems, an optimal, calculation-friendly form of Hamiltonian is generally non-Hermitian, H?H. This makes its physical interpretation ambiguous. Without altering H, this ambiguity can be resolved either via a transformation of H into its isospectral Hermitian form via a so-called Dyson map ?:Hh, or via a (formally equivalent) specification of a nontrivial physical inner-product metric ? in Hilbert space. Here, we focus on the former strategy. Our present construction of the Hermitian isospectral twins h of H is exhaustive. As a byproduct, it not only restores the conventional correspondence principle between quantum and classical physics, but it also provides a framework for a systematic classification of all of the admissible probabilistic interpretations of quantum systems using a preselected H in QHQM framework.}, keywords = {}, pubstate = {published}, tppubtype = {article} } In quasi-Hermitian quantum mechanics (QHQM) of unitary systems, an optimal, calculation-friendly form of Hamiltonian is generally non-Hermitian, H?H. This makes its physical interpretation ambiguous. Without altering H, this ambiguity can be resolved either via a transformation of H into its isospectral Hermitian form via a so-called Dyson map ?:Hh, or via a (formally equivalent) specification of a nontrivial physical inner-product metric ? in Hilbert space. Here, we focus on the former strategy. Our present construction of the Hermitian isospectral twins h of H is exhaustive. As a byproduct, it not only restores the conventional correspondence principle between quantum and classical physics, but it also provides a framework for a systematic classification of all of the admissible probabilistic interpretations of quantum systems using a preselected H in QHQM framework. |
| 389. | Ting-Ting Ma, Jian Tang, Yun-Lan Zuo, Ran Huang, Adam Miranowicz, Franco Nori, Hui Jing Two-Polariton Blockade via Ultrastrong Light-Matter Coupling Phys. Rev. Lett., 136 , pp. 033601, 2026. @article{Ma26, title = {Two-Polariton Blockade via Ultrastrong Light-Matter Coupling}, author = {Ting-Ting Ma and Jian Tang and Yun-Lan Zuo and Ran Huang and Adam Miranowicz and Franco Nori and Hui Jing}, url = {https://link.aps.org/doi/10.1103/nfz3-txyt}, doi = {10.1103/nfz3-txyt}, year = {2026}, date = {2026-01-01}, journal = {Phys. Rev. Lett.}, volume = {136}, pages = {033601}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 388. | Y. Yang, H. Zhu, O. M. Baksalary On a generalization of an EP element Communications in Algebra, 54 , pp. 816–829, 2026. @article{Yang2026, title = {On a generalization of an EP element}, author = {Y. Yang and H. Zhu and O. M. Baksalary}, year = {2026}, date = {2026-01-01}, journal = {Communications in Algebra}, volume = {54}, pages = {816–829}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
2025 |
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| 387. | Huixin Guo, Kilian Lenz, Mateusz Gołębiewski, Ryszard Narkowicz, Jürgen Lindner, Maciej Krawczyk, Dirk Grundler Coherent Spin Waves in Curved Ferromagnetic Nanocaps of a 3D-Printed Magnonic Crystal Small, n/a (n/a), pp. e08983, 2025. @article{https://doi.org/10.1002/smll.202508983, title = {Coherent Spin Waves in Curved Ferromagnetic Nanocaps of a 3D-Printed Magnonic Crystal}, author = {Huixin Guo and Kilian Lenz and Mateusz Gołębiewski and Ryszard Narkowicz and Jürgen Lindner and Maciej Krawczyk and Dirk Grundler}, url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/smll.202508983}, doi = {https://doi.org/10.1002/smll.202508983}, year = {2025}, date = {2025-12-30}, journal = {Small}, volume = {n/a}, number = {n/a}, pages = {e08983}, abstract = {Abstract Coherent magnon modes in a truly 3D magnonic crystal have yet to be investigated. This scientific gap exists despite numerous theoretical predictions of miniband formation and edge modes with topological protection. Such properties are key to advancing nanomagnonics for ultrafast data processing. In this work, a scalable nanotechnology for fabricating 3D magnonic crystals embedded in an on-chip microresonator is presented. It is realized by two-photon lithography of a 3D woodpile structure and atomic layer deposition of 30-nm-thick nickel film. Operated near 14 and 24 GHz, the microresonator output revealed numerous coherent magnons with distinct angular dependencies reflecting the underlying face-centered cubic lattice. Micromagnetic simulations show that the edge modes are localized within curved nanocaps and remain robust against changes in field orientation. Along an edge, they exhibit an unexpected phase evolution. These findings advance the development of functional microwave circuits with 3D magnonic crystals and strengthen their visionary prospects for edge-dominated magnon modes.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Abstract Coherent magnon modes in a truly 3D magnonic crystal have yet to be investigated. This scientific gap exists despite numerous theoretical predictions of miniband formation and edge modes with topological protection. Such properties are key to advancing nanomagnonics for ultrafast data processing. In this work, a scalable nanotechnology for fabricating 3D magnonic crystals embedded in an on-chip microresonator is presented. It is realized by two-photon lithography of a 3D woodpile structure and atomic layer deposition of 30-nm-thick nickel film. Operated near 14 and 24 GHz, the microresonator output revealed numerous coherent magnons with distinct angular dependencies reflecting the underlying face-centered cubic lattice. Micromagnetic simulations show that the edge modes are localized within curved nanocaps and remain robust against changes in field orientation. Along an edge, they exhibit an unexpected phase evolution. These findings advance the development of functional microwave circuits with 3D magnonic crystals and strengthen their visionary prospects for edge-dominated magnon modes. |
| 386. | Yulia Kharlan, Roman Verba, Krzysztof Sobucki, Paweł Gruszecki, Maciej Krawczyk Three-magnon scattering of spin wave on edge-localized mode in thin ferromagnetic film Phys. Rev. B, 112 , pp. 214438, 2025. @article{7rbt-2ywdb, title = {Three-magnon scattering of spin wave on edge-localized mode in thin ferromagnetic film}, author = {Yulia Kharlan and Roman Verba and Krzysztof Sobucki and Paweł Gruszecki and Maciej Krawczyk}, url = {https://link.aps.org/doi/10.1103/7rbt-2ywd}, doi = {10.1103/7rbt-2ywd}, year = {2025}, date = {2025-12-01}, journal = {Phys. Rev. B}, volume = {112}, pages = {214438}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 385. | Julia Kharlan, Mateusz Zelent, Konstantin Guslienko, Vladimir O Golub, Jarosław W Kłos Stabilization of the skyrmion in a hybrid magnetic-superconducting nanostucture Phys. Rev. B, 112 , pp. 224418, 2025. @article{79d8-gmcsb, title = {Stabilization of the skyrmion in a hybrid magnetic-superconducting nanostucture}, author = {Julia Kharlan and Mateusz Zelent and Konstantin Guslienko and Vladimir O Golub and Jarosław W Kłos }, url = {https://link.aps.org/doi/10.1103/79d8-gmcs}, doi = {10.1103/79d8-gmcs}, year = {2025}, date = {2025-12-01}, journal = {Phys. Rev. B}, volume = {112}, pages = {224418}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 384. | Yulia Kharlan, Mateusz Zelent, Konstantin Guslienko, Vladimir O Golub, Jarosław W. Kłos Stabilization of the skyrmion in a hybrid magnetic-superconducting nanostucture Phys. Rev. B, 112 , pp. 224418, 2025. @article{79d8-gmcs, title = {Stabilization of the skyrmion in a hybrid magnetic-superconducting nanostucture}, author = {Yulia Kharlan and Mateusz Zelent and Konstantin Guslienko and Vladimir O Golub and Jarosław W. Kłos}, url = {https://link.aps.org/doi/10.1103/79d8-gmcs}, doi = {10.1103/79d8-gmcs}, year = {2025}, date = {2025-12-01}, journal = {Phys. Rev. B}, volume = {112}, pages = {224418}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 383. | Kishore Thapliyal, Jan Perina Jr., Grzegorz Chimczak, Anna Kowalewska-Kudlaszyk, Adam Miranowicz Quantum, 9 , pp. 1932, 2025, ISSN: 2521-327X. @article{Thapliyal2025quantum1, title = {Multiple quantum exceptional, diabolical, and hybrid points in multimode bosonic systems: I. Inherited and genuine singularities}, author = {Kishore Thapliyal and Jan Perina Jr. and Grzegorz Chimczak and Anna Kowalewska-Kudlaszyk and Adam Miranowicz}, doi = {10.22331/q-2025-12-10-1932}, issn = {2521-327X}, year = {2025}, date = {2025-12-01}, journal = {Quantum}, volume = {9}, pages = {1932}, publisher = {Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 382. | Bogusław Mróz, Zbigniew Trybula, Sławomir Mielcarek, Aleksandra Trzaskowska The influence of NH4 doping on the elastic properties of RbH2AsO4 crystals Scientific Reports, 15 (1), pp. 39140, 2025, ISSN: 2045-2322. @article{Mroz2025, title = {The influence of NH4 doping on the elastic properties of RbH2AsO4 crystals}, author = {Bogusław Mróz and Zbigniew Trybula and Sławomir Mielcarek and Aleksandra Trzaskowska}, url = {https://doi.org/10.1038/s41598-025-27078-7}, doi = {10.1038/s41598-025-27078-7}, issn = {2045-2322}, year = {2025}, date = {2025-11-07}, journal = {Scientific Reports}, volume = {15}, number = {1}, pages = {39140}, abstract = {We report a systematic study of the elastic and dynamic properties of mixed Rb1-x(NH4)xH2AsO4 (RADA) crystals using high-resolution Brillouin light scattering over a broad temperature range (40--300 K). By varying the ammonium concentration, we reveal how $$backslash:backslashtextNbackslashtextH_4^+$$substitution alters the elastic stiffness tensor, phase transition temperatures, phonon damping, and order parameter relaxation dynamics. The results show a clear evolution from ferroelectric to antiferroelectric and proton-glass behavior as the ammonium content increases. We observe enhanced elastic softening, increased phonon scattering, and reduced relaxation times with doping, indicating a growing degree of structural disorder and frustration in the hydrogen-bond network. The observed changes in phonon thermal conductivity correlate with these elastic anomalies. Our findings highlight the potential of chemical substitution in tuning the mechanical and thermal properties of hydrogen-bonded ferroelectric crystals, with implications for designing adaptive low-temperature optical and memory materials.}, keywords = {}, pubstate = {published}, tppubtype = {article} } We report a systematic study of the elastic and dynamic properties of mixed Rb1-x(NH4)xH2AsO4 (RADA) crystals using high-resolution Brillouin light scattering over a broad temperature range (40--300 K). By varying the ammonium concentration, we reveal how $$backslash:backslashtextNbackslashtextH_4^+$$substitution alters the elastic stiffness tensor, phase transition temperatures, phonon damping, and order parameter relaxation dynamics. The results show a clear evolution from ferroelectric to antiferroelectric and proton-glass behavior as the ammonium content increases. We observe enhanced elastic softening, increased phonon scattering, and reduced relaxation times with doping, indicating a growing degree of structural disorder and frustration in the hydrogen-bond network. The observed changes in phonon thermal conductivity correlate with these elastic anomalies. Our findings highlight the potential of chemical substitution in tuning the mechanical and thermal properties of hydrogen-bonded ferroelectric crystals, with implications for designing adaptive low-temperature optical and memory materials. |
| 381. | Maciej Błaszak, Krzysztof Marciniak, Błażej M. Szablikowski Stationary Systems of the AKNS Hierarchy Journal of Nonlinear Mathematical Physics, 32 , pp. 89, 2025. @article{Błaszak2025b, title = {Stationary Systems of the AKNS Hierarchy}, author = {Maciej Błaszak and Krzysztof Marciniak and Błażej M. Szablikowski }, doi = {10.1007/s44198-025-00346-w}, year = {2025}, date = {2025-11-04}, journal = { Journal of Nonlinear Mathematical Physics}, volume = {32}, pages = {89}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 380. | Liubov Ivzhenko, Sergey Polevoy, Sergey Nedukh, Maciej Krawczyk Influence of photon-magnon coupling on spin-wave-excitation enhancement Phys. Rev. Appl., 24 , pp. 054056, 2025. @article{49pf-hw6m, title = {Influence of photon-magnon coupling on spin-wave-excitation enhancement}, author = {Liubov Ivzhenko and Sergey Polevoy and Sergey Nedukh and Maciej Krawczyk}, url = {https://link.aps.org/doi/10.1103/49pf-hw6m}, doi = {10.1103/49pf-hw6m}, year = {2025}, date = {2025-11-01}, journal = {Phys. Rev. Appl.}, volume = {24}, pages = {054056}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 379. | Andrzej Grudka, Marcin Karczewski, Paweł Kurzyński, Jȩdrzej Stempin, Jan Wójcik, Antoni Wójcik New Journal of Physics, 27 (11), pp. 114504, 2025. @article{Grudka_2025, title = {Quantum synchronizing words}, author = {Andrzej Grudka and Marcin Karczewski and Paweł Kurzyński and Jȩdrzej Stempin and Jan Wójcik and Antoni Wójcik}, url = {https://doi.org/10.1088/1367-2630/ae16ca}, doi = {10.1088/1367-2630/ae16ca}, year = {2025}, date = {2025-11-01}, journal = {New Journal of Physics}, volume = {27}, number = {11}, pages = {114504}, publisher = {IOP Publishing}, abstract = {Synchronizing words in classical automata theory provide a mechanism to reset any state of a deterministic automaton to a specific target state via a carefully chosen finite sequence of transition rules. In this work, we extend the concept of synchronizing words to quantum information theory. Specifically, we investigate whether the concatenation of two non-resetting quantum channels can give rise to a resetting channel. While we formulate the problem for general qudits, the complexity of the setting leads us to focus on particular resetting concatenations for qubits and qutrits. Furthermore, we demonstrate that following the reset, any pure real qutrit state can be closely approximated using the same two non-resetting channels. These findings establish a quantum analogue of synchronizing words, highlighting their potential applications in constructing minimal sets of quantum channels capable of both resetting and preparing arbitrary states.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Synchronizing words in classical automata theory provide a mechanism to reset any state of a deterministic automaton to a specific target state via a carefully chosen finite sequence of transition rules. In this work, we extend the concept of synchronizing words to quantum information theory. Specifically, we investigate whether the concatenation of two non-resetting quantum channels can give rise to a resetting channel. While we formulate the problem for general qudits, the complexity of the setting leads us to focus on particular resetting concatenations for qubits and qutrits. Furthermore, we demonstrate that following the reset, any pure real qutrit state can be closely approximated using the same two non-resetting channels. These findings establish a quantum analogue of synchronizing words, highlighting their potential applications in constructing minimal sets of quantum channels capable of both resetting and preparing arbitrary states. |
| 378. | O. M. Baksalary, G, Trenkler ANOVA and the least squares estimator Communications in Statistics – Theory and Methods, 54 (22), pp. 7362-7370, 2025. @article{Baksalary2025c, title = {ANOVA and the least squares estimator}, author = {O. M. Baksalary and G, Trenkler}, doi = {10.1080/03610926.2025.2474626}, year = {2025}, date = {2025-10-03}, journal = {Communications in Statistics – Theory and Methods}, volume = {54}, number = {22}, pages = {7362-7370}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 377. | Rob den Teuling, Ritesh Das, Artem V Bondarenko, Elena V. Tartakovskaya, Gerrit E W Bauer, Yaroslav M Blanter Spin waves in the bilayer van der Waals magnet CrSBr Phys. Rev. B, 112 , pp. 144442, 2025. @article{w4xn-2yff, title = {Spin waves in the bilayer van der Waals magnet CrSBr}, author = {Rob den Teuling and Ritesh Das and Artem V Bondarenko and Elena V. Tartakovskaya and Gerrit E W Bauer and Yaroslav M Blanter}, url = {https://link.aps.org/doi/10.1103/w4xn-2yff}, doi = {10.1103/w4xn-2yff}, year = {2025}, date = {2025-10-01}, journal = {Phys. Rev. B}, volume = {112}, pages = {144442}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 376. | Bivas Rana, Susmita Saha, Paweł Gruszecki, Jorge Puebla Focus on coupling phenomena in magnonics and magnonic metamaterials Journal of Physics: Condensed Matter, 37 (43), pp. 430201, 2025. @article{Rana_2025, title = {Focus on coupling phenomena in magnonics and magnonic metamaterials}, author = {Bivas Rana and Susmita Saha and Paweł Gruszecki and Jorge Puebla}, url = {https://doi.org/10.1088/1361-648X/ae1398}, doi = {10.1088/1361-648X/ae1398}, year = {2025}, date = {2025-10-01}, journal = {Journal of Physics: Condensed Matter}, volume = {37}, number = {43}, pages = {430201}, publisher = {IOP Publishing}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 375. | Aleksey Alekseev, Agnieszka Cichy, Konrad J. Kapcia Physical Review B, 112 (11), pp. 115155, 2025. @article{Alekseev2025, title = {Particle-hole asymmetry and pinball liquid in a triangular-lattice extended Hubbard model within the mean-field approximation}, author = {Aleksey Alekseev and Agnieszka Cichy and Konrad J. Kapcia}, doi = {10.1103/134x-s54f}, year = {2025}, date = {2025-09-29}, journal = {Physical Review B}, volume = {112}, number = {11}, pages = {115155}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 374. | Deng-Gao Lai, Adam Miranowicz, Franco Nori Nonreciprocal quantum synchronization Nature Communications, 16 (1), pp. 8491, 2025, ISSN: 2041-1723. @article{Lai2025nc2, title = {Nonreciprocal quantum synchronization}, author = {Deng-Gao Lai and Adam Miranowicz and Franco Nori}, url = {https://doi.org/10.1038/s41467-025-63408-z}, doi = {10.1038/s41467-025-63408-z}, issn = {2041-1723}, year = {2025}, date = {2025-09-26}, journal = {Nature Communications}, volume = {16}, number = {1}, pages = {8491}, abstract = {Nonreciprocal physics is garnering enormous attention in both classical and quantum resource fields. Surprisingly, previous demonstrations have not explored nonreciprocal quantum synchronization of phonons, one of the most obvious examples of nonreciprocal quantum resources. Here we fill this gap to demonstrate the possibility of nonreciprocal quantum synchronization, revealing its counterintuitive robustness against random fabrication imperfections and thermal noise of practical devices. Specifically, phonons are synchronized in a chosen direction of light (magnetic field) but unsynchronized in the other, yielding a unique nonreciprocity of quantum synchronization. This happens by harnessing the synergy of the Sagnac and magnon-Kerr effects, leading to an opposite Sagnac-Fizeau shift and an exceptional magnon-Kerr-induced transition. Unlike previous proposals naturally restricted to the low-imperfection regime, our approach beats this limitation, owing to the magnon-Kerr-induced improvement in the resonator resilience. The study lays the foundation for generating fragile-to-robust nonreciprocal quantum resources.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Nonreciprocal physics is garnering enormous attention in both classical and quantum resource fields. Surprisingly, previous demonstrations have not explored nonreciprocal quantum synchronization of phonons, one of the most obvious examples of nonreciprocal quantum resources. Here we fill this gap to demonstrate the possibility of nonreciprocal quantum synchronization, revealing its counterintuitive robustness against random fabrication imperfections and thermal noise of practical devices. Specifically, phonons are synchronized in a chosen direction of light (magnetic field) but unsynchronized in the other, yielding a unique nonreciprocity of quantum synchronization. This happens by harnessing the synergy of the Sagnac and magnon-Kerr effects, leading to an opposite Sagnac-Fizeau shift and an exceptional magnon-Kerr-induced transition. Unlike previous proposals naturally restricted to the low-imperfection regime, our approach beats this limitation, owing to the magnon-Kerr-induced improvement in the resonator resilience. The study lays the foundation for generating fragile-to-robust nonreciprocal quantum resources. |
| 373. | Arnab Laha, Dinesh Beniwal, Somnath Ghosh, Adam Miranowicz Scientific Reports, 15 (1), pp. 32866, 2025, ISSN: 2045-2322. @article{Laha2025, title = {Programmable state switching based on higher-order exceptional points in anti-parity-time symmetric microcavity systems}, author = {Arnab Laha and Dinesh Beniwal and Somnath Ghosh and Adam Miranowicz}, url = {https://doi.org/10.1038/s41598-025-13797-4}, doi = {10.1038/s41598-025-13797-4}, issn = {2045-2322}, year = {2025}, date = {2025-09-25}, journal = {Scientific Reports}, volume = {15}, number = {1}, pages = {32866}, abstract = {Diverging from traditional parity-time (PT)-symmetric paradigms, anti-PT (APT) symmetry provides an intriguing framework for harnessing non-Hermitian physics, offering the immense potential to control light-matter interactions in artificial photonic systems reliant on negative-index materials, typically realized with metamaterials. We report a specially configured Fabry-Pérot-type microcavity system by harnessing the unique anti-PT-symmetric constraints with negative-indexed background materials and meticulously balanced gain-loss distributions. We unveil the intriguing topological properties of a parametrically encircled third-order EP (EP3), emerging from two connected second-order EPs (EP2s) among three cavity states. We present a programmable adiabatic state-switching process and highlight the nuanced behaviors of second and third-order branch points by winding around embedded EPs within a 2D gain-loss parameter space. This work explores the theoretical foundations of the topological properties of EPs in negative-indexed media, paving the way for a novel class of metamaterial-based artificial photonic devices.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Diverging from traditional parity-time (PT)-symmetric paradigms, anti-PT (APT) symmetry provides an intriguing framework for harnessing non-Hermitian physics, offering the immense potential to control light-matter interactions in artificial photonic systems reliant on negative-index materials, typically realized with metamaterials. We report a specially configured Fabry-Pérot-type microcavity system by harnessing the unique anti-PT-symmetric constraints with negative-indexed background materials and meticulously balanced gain-loss distributions. We unveil the intriguing topological properties of a parametrically encircled third-order EP (EP3), emerging from two connected second-order EPs (EP2s) among three cavity states. We present a programmable adiabatic state-switching process and highlight the nuanced behaviors of second and third-order branch points by winding around embedded EPs within a 2D gain-loss parameter space. This work explores the theoretical foundations of the topological properties of EPs in negative-indexed media, paving the way for a novel class of metamaterial-based artificial photonic devices. |
| 372. | Mateusz Zelent, Maciej Krawczyk, Konstantin Y Guslienko Beyond Fixed-Size Skyrmions in Nanodots: Switchable Multistability with Ferromagnetic Rings Nano Letters, 2025, ISSN: 1530-6984. @article{Zelent2025, title = {Beyond Fixed-Size Skyrmions in Nanodots: Switchable Multistability with Ferromagnetic Rings}, author = {Mateusz Zelent and Maciej Krawczyk and Konstantin Y Guslienko}, url = {https://doi.org/10.1021/acs.nanolett.5c02678}, doi = {10.1021/acs.nanolett.5c02678}, issn = {1530-6984}, year = {2025}, date = {2025-09-11}, journal = {Nano Letters}, publisher = {American Chemical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 371. | Karol Bartkiewicz, Grzegorz Chimczak, Anna Kowalewska-Kudłaszyk, Adam Miranowicz, Joanna K. Kalaga, Jan Peřina Jr., Wiesław Leoński Quantumness and its hierarchies in -symmetric down-conversion models Phys. Rev. A, pp. –, 2025. @article{9vty-ctf7, title = {Quantumness and its hierarchies in -symmetric down-conversion models}, author = {Karol Bartkiewicz and Grzegorz Chimczak and Anna Kowalewska-Kudłaszyk and Adam Miranowicz and Joanna K. Kalaga and Jan Peřina Jr. and Wiesław Leoński}, url = {https://link.aps.org/doi/10.1103/9vty-ctf7}, doi = {10.1103/9vty-ctf7}, year = {2025}, date = {2025-09-01}, journal = {Phys. Rev. A}, pages = {--}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 370. | Christoph Hotter, Adam Miranowicz, Karol Gietka Phys. Rev. Lett., 135 , pp. 100802, 2025. @article{Hotter25prl, title = {Quantum Metrology in the Ultrastrong Coupling Regime of Light-Matter Interactions: Leveraging Virtual Excitations without Extracting Them}, author = {Christoph Hotter and Adam Miranowicz and Karol Gietka}, url = {https://link.aps.org/doi/10.1103/cxvs-5pb1}, doi = {10.1103/cxvs-5pb1}, year = {2025}, date = {2025-09-01}, journal = {Phys. Rev. Lett.}, volume = {135}, pages = {100802}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 369. | Deng-Gao Lai, Adam Miranowicz, Franco Nori Topological phonon blockade and its transfer via dark-mode engineering Nature Communications, 16 (1), pp. 8094, 2025, ISSN: 2041-1723. @article{Lai2025nc1, title = {Topological phonon blockade and its transfer via dark-mode engineering}, author = {Deng-Gao Lai and Adam Miranowicz and Franco Nori}, url = {https://doi.org/10.1038/s41467-025-63042-9}, doi = {10.1038/s41467-025-63042-9}, issn = {2041-1723}, year = {2025}, date = {2025-08-29}, journal = {Nature Communications}, volume = {16}, number = {1}, pages = {8094}, abstract = {Unidirectional topological behavior, engendered by imposing topological operations winding around an exceptional point, is sensitive to dark modes, which allow deactivating topological operations, resulting in a complete blockade of both mode conversion and phonon transfer between dark and bright modes. Here we demonstrate how to beat this challenge and achieve a versatile yet unique nonreciprocal topological phonon transfer and blockade via dark-mode engineering. This happens by harnessing the power of synthetic magnetism, leading to an extraordinary transition between the dark-mode nonbreaking and breaking regimes, in a precise and controlled manner. Specifically, topological phonon blockade (transfer) happens in the dark-mode nonbreaking (breaking) regime, offering an exciting opportunity of switching between topological phonon blockade and its transfer on demand, which has no counterpart in previous studies. Remarkably, applying dark-mode engineering to quantum optomechanical networks can enable scalable network-based topological phonon transfer and quantum collective ground-state preparation. The proposed mechanism has general validity and can be generalized to the manipulation of various dark-state-related quantum effects, advancing the development of scalable quantum information processors. This study maps a general path towards generating a profoundly different topological quantum resource with immunity against both dark modes and dark states.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Unidirectional topological behavior, engendered by imposing topological operations winding around an exceptional point, is sensitive to dark modes, which allow deactivating topological operations, resulting in a complete blockade of both mode conversion and phonon transfer between dark and bright modes. Here we demonstrate how to beat this challenge and achieve a versatile yet unique nonreciprocal topological phonon transfer and blockade via dark-mode engineering. This happens by harnessing the power of synthetic magnetism, leading to an extraordinary transition between the dark-mode nonbreaking and breaking regimes, in a precise and controlled manner. Specifically, topological phonon blockade (transfer) happens in the dark-mode nonbreaking (breaking) regime, offering an exciting opportunity of switching between topological phonon blockade and its transfer on demand, which has no counterpart in previous studies. Remarkably, applying dark-mode engineering to quantum optomechanical networks can enable scalable network-based topological phonon transfer and quantum collective ground-state preparation. The proposed mechanism has general validity and can be generalized to the manipulation of various dark-state-related quantum effects, advancing the development of scalable quantum information processors. This study maps a general path towards generating a profoundly different topological quantum resource with immunity against both dark modes and dark states. |
| 368. | Lin Zhang, Igor Tyulnev, Lenard Vamos, Julita Poborska, Utso Bhattacharya, Ravindra W. Chhajlany, Tobias Grass, Jens Biegert, Maciej Lewenstein Revealing the anisotropic charge-density-wave order of $TiSe_2$ through high harmonic generation Phys. Rev. B, 112 , pp. 085147, 2025. @article{812z-nl4m, title = {Revealing the anisotropic charge-density-wave order of $TiSe_2$ through high harmonic generation}, author = {Lin Zhang and Igor Tyulnev and Lenard Vamos and Julita Poborska and Utso Bhattacharya and Ravindra W. Chhajlany and Tobias Grass and Jens Biegert and Maciej Lewenstein}, url = {https://link.aps.org/doi/10.1103/812z-nl4m}, doi = {10.1103/812z-nl4m}, year = {2025}, date = {2025-08-26}, journal = {Phys. Rev. B}, volume = {112}, pages = {085147}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 367. | Sebastião Antunes, Michal Stransky, Victor Tkachenko, Ichiro Inoue, Philip Heimann, Konrad J. Kapcia, Beata Ziaja Calculation of effective pump dose in X-ray-pump/X-ray-probe experiments Journal of Synchrotron Radiation, 32 (5), pp. 1106-1115, 2025. @article{Antunes2025, title = {Calculation of effective pump dose in X-ray-pump/X-ray-probe experiments}, author = {Sebastião Antunes and Michal Stransky and Victor Tkachenko and Ichiro Inoue and Philip Heimann and Konrad J. Kapcia and Beata Ziaja}, doi = {10.1107/S1600577525006939}, year = {2025}, date = {2025-08-21}, journal = {Journal of Synchrotron Radiation}, volume = {32}, number = {5}, pages = {1106-1115}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 366. | Kuba Chmielewski, Krzysztof Grygiel, Karol Bartkiewicz Stability Analysis of Three Coupled Kerr Oscillators: Implications for Quantum Computing CMST, 31 (1–3), pp. 33–47, 2025, ISSN: 1505-0602. @article{kuba_stability_2025, title = {Stability Analysis of Three Coupled Kerr Oscillators: Implications for Quantum Computing}, author = {Kuba Chmielewski and Krzysztof Grygiel and Karol Bartkiewicz }, url = {https://cmst.eu/articles/stability-analysis-of-three-coupled-kerr-oscillators-implications-for-quantum-computing/}, doi = {10.12921/cmst.2025.0000012}, issn = {1505-0602}, year = {2025}, date = {2025-08-18}, urldate = {2025-08-22}, journal = {CMST}, volume = {31}, number = {1–3}, pages = {33--47}, abstract = {We investigate the classical dynamics of optical nonlinear Kerr couplers, focusing on their potential relevance to quantum computing applications. The system consists of three Kerr-type nonlinear oscillators arranged in two configurations: a triangular arrangement, where each oscillator is coupled to the others, and a sandwich arrangement, where only the middle oscillator interacts with the two outer ones. The system is driven by an external periodic field and subject to dissipative processes. Its evolution is governed by six non-autonomous differential equations derived from a Kerr Hamiltonian with nonlinear coupling terms. We demonstrate that even for identical Kerr media, the interplay between nonlinear couplings and mismatched fundamental and pump frequencies gives rise to rich and complex dynamics, including the emergence of multiple stable attractors. These attractors are highly sensitive to both the coupling configuration and initial conditions. A key contribution of this work is a detailed stability analysis based on numerical calculation of Lyapunov exponents, revealing transitions from regular to chaotic dynamics as damping is reduced. We identify critical damping thresholds for the onset of chaos and characterize phenomena such as chaotic beats. These findings offer insights for potential experimental realizations and are directly relevant to emerging quantum technologies, where Kerr parametric oscillators play a central role in quantum gates, error correction protocols, and quantum neural network architectures.}, keywords = {}, pubstate = {published}, tppubtype = {article} } We investigate the classical dynamics of optical nonlinear Kerr couplers, focusing on their potential relevance to quantum computing applications. The system consists of three Kerr-type nonlinear oscillators arranged in two configurations: a triangular arrangement, where each oscillator is coupled to the others, and a sandwich arrangement, where only the middle oscillator interacts with the two outer ones. The system is driven by an external periodic field and subject to dissipative processes. Its evolution is governed by six non-autonomous differential equations derived from a Kerr Hamiltonian with nonlinear coupling terms. We demonstrate that even for identical Kerr media, the interplay between nonlinear couplings and mismatched fundamental and pump frequencies gives rise to rich and complex dynamics, including the emergence of multiple stable attractors. These attractors are highly sensitive to both the coupling configuration and initial conditions. A key contribution of this work is a detailed stability analysis based on numerical calculation of Lyapunov exponents, revealing transitions from regular to chaotic dynamics as damping is reduced. We identify critical damping thresholds for the onset of chaos and characterize phenomena such as chaotic beats. These findings offer insights for potential experimental realizations and are directly relevant to emerging quantum technologies, where Kerr parametric oscillators play a central role in quantum gates, error correction protocols, and quantum neural network architectures. |
| 365. | O. M. Baksalary, G, Trenkler Another look at the eigenvalues of functions of a pair of orthogonal projectors Electronic Journal of Linear Algebra, 41 , pp. 412-424, 2025. @article{Baksalary2025b, title = {Another look at the eigenvalues of functions of a pair of orthogonal projectors}, author = {O. M. Baksalary and G, Trenkler}, doi = {10.13001/ela.2025.9331}, year = {2025}, date = {2025-08-12}, journal = {Electronic Journal of Linear Algebra}, volume = {41}, pages = {412-424}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 364. | Marek Kopciuch, Adam Miranowicz Phys. Rev. Res., 7 , pp. 033187, 2025. @article{Kopciuch2025, title = {Liouvillian and Ħamiltonian exceptional points of atomic vapors: Ŧhe spectral signatures of quantum jumps}, author = {Marek Kopciuch and Adam Miranowicz}, url = {https://link.aps.org/doi/10.1103/zxw5-nlsn}, doi = {10.1103/zxw5-nlsn}, year = {2025}, date = {2025-08-01}, journal = {Phys. Rev. Res.}, volume = {7}, pages = {033187}, publisher = {American Physical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 363. | Igor Tyulnev, Lin Zhang, Lenard Vamos, Julita Poborska, Utso Bhattacharya, Ravindra W. Chhajlany, Tobias Grass, Samuel Mañas-Valero, Eugenio Coronado, Maciej Lewenstein, Jens Biegert High harmonic spectroscopy reveals anisotropy of the charge-density-wave phase transition in TiSe2 Communications Materials, 6 (1), 2025, ISBN: 2662-4443. @article{Tyulnev2025, title = {High harmonic spectroscopy reveals anisotropy of the charge-density-wave phase transition in TiSe2}, author = {Igor Tyulnev and Lin Zhang and Lenard Vamos and Julita Poborska and Utso Bhattacharya and Ravindra W. Chhajlany and Tobias Grass and Samuel Mañas-Valero and Eugenio Coronado and Maciej Lewenstein and Jens Biegert}, url = {https://doi.org/10.1038/s43246-025-00873-5}, doi = {10.1038/s43246-025-00873-5}, isbn = {2662-4443}, year = {2025}, date = {2025-07-18}, journal = {Communications Materials}, volume = {6}, number = {1}, abstract = {Charge density waves (CDW) appear as periodic lattice deformations which arise from electron-phonon and excitonic correlations and provide a path towards the study of condensate phases at high temperatures. While characterization of this correlated phase is well established via real or reciprocal space techniques, for systems where the mechanisms interplay, a macroscopic approach becomes necessary. Here, we demonstrate the application of polarization-resolved high-harmonic generation (HHG) spectroscopy to investigate the correlated CDW phase and transitions in TiSe₂. Unlike previous studies focusing on static crystallographic properties, the research examines the dynamic reordering that occurs within the CDW as the material is cooled from room temperature to 14 K. By linking ultrafast field-driven dynamics to the material’s potential landscape, the study demonstrates HHG’s unique sensitivity to highly correlated phases and their strength. The findings reveal an anisotropic component below the CDW transition temperature, providing insights into the nature of this phase. The investigation highlights the interplay between linear and nonlinear optical responses and their departure from simple perturbative dynamics, offering a fresh perspective on correlated quantum phases in condensed matter systems.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Charge density waves (CDW) appear as periodic lattice deformations which arise from electron-phonon and excitonic correlations and provide a path towards the study of condensate phases at high temperatures. While characterization of this correlated phase is well established via real or reciprocal space techniques, for systems where the mechanisms interplay, a macroscopic approach becomes necessary. Here, we demonstrate the application of polarization-resolved high-harmonic generation (HHG) spectroscopy to investigate the correlated CDW phase and transitions in TiSe₂. Unlike previous studies focusing on static crystallographic properties, the research examines the dynamic reordering that occurs within the CDW as the material is cooled from room temperature to 14 K. By linking ultrafast field-driven dynamics to the material’s potential landscape, the study demonstrates HHG’s unique sensitivity to highly correlated phases and their strength. The findings reveal an anisotropic component below the CDW transition temperature, providing insights into the nature of this phase. The investigation highlights the interplay between linear and nonlinear optical responses and their departure from simple perturbative dynamics, offering a fresh perspective on correlated quantum phases in condensed matter systems. |
| 362. | Amrutha V. Achuthan, Sreedevi Janardhanan, Piotr Kuświk, Aleksandra Trzaskowska Scientific Reports, 15 (1), pp. 25585, 2025, ISSN: 2045-2322. @article{Achuthan2025, title = {Influence of effective thickness in elastic anisotropy and surface acoustic wave propagation in CoFeB/Au multilayer}, author = {Amrutha V. Achuthan and Sreedevi Janardhanan and Piotr Ku{ś}wik and Aleksandra Trzaskowska}, url = {https://doi.org/10.1038/s41598-025-08560-8}, doi = {10.1038/s41598-025-08560-8}, issn = {2045-2322}, year = {2025}, date = {2025-07-15}, journal = {Scientific Reports}, volume = {15}, number = {1}, pages = {25585}, abstract = {Surface acoustic waves (SAWs) in multilayered nanostructures represent a critical frontier in understanding material behavior at the nanoscale, with profound implications for emerging acoustic and spintronic technologies. In this study, we investigate the influence of the magnetic layer thickness on the propagation of surface acoustic waves in CoFeB-based multilayers. Two approaches to effective medium modelling are considered: treating the entire multilayer as a homogeneous medium and focusing on the region affected by light penetration. The elastic properties of the system are analyzed using Brillouin light scattering and numerical modelling, with a particular emphasis on the anisotropy of Young's modulus and its dependence on CoFeB thickness. The results reveal a significant variation in surface acoustic wave velocity and elastic anisotropy as a function of the multilayer configuration, highlighting the role of the penetration depth in effective medium approximations. The best agreement with BLS measurements was obtained for the effective medium model limited to the optical penetration depth, highlighting the importance of light-matter interaction volume in SAW-based diagnostics. These findings provide valuable insights into the tunability of acoustic and spin-wave frequencies through structural modifications, which is crucial for developing high-performance resonators, surface acoustic wave filters, and spin-wave-based information processing devices.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Surface acoustic waves (SAWs) in multilayered nanostructures represent a critical frontier in understanding material behavior at the nanoscale, with profound implications for emerging acoustic and spintronic technologies. In this study, we investigate the influence of the magnetic layer thickness on the propagation of surface acoustic waves in CoFeB-based multilayers. Two approaches to effective medium modelling are considered: treating the entire multilayer as a homogeneous medium and focusing on the region affected by light penetration. The elastic properties of the system are analyzed using Brillouin light scattering and numerical modelling, with a particular emphasis on the anisotropy of Young's modulus and its dependence on CoFeB thickness. The results reveal a significant variation in surface acoustic wave velocity and elastic anisotropy as a function of the multilayer configuration, highlighting the role of the penetration depth in effective medium approximations. The best agreement with BLS measurements was obtained for the effective medium model limited to the optical penetration depth, highlighting the importance of light-matter interaction volume in SAW-based diagnostics. These findings provide valuable insights into the tunability of acoustic and spin-wave frequencies through structural modifications, which is crucial for developing high-performance resonators, surface acoustic wave filters, and spin-wave-based information processing devices. |
| 361. | Emil Siuda, Ireneusz Weymann Competition between Nagaoka ferromagnetism and superconducting pairing in hybrid quantum dots Sci. Rep., 15 , pp. 25349, 2025. @article{Siuda2025c, title = {Competition between Nagaoka ferromagnetism and superconducting pairing in hybrid quantum dots}, author = {Emil Siuda and Ireneusz Weymann}, url = {https://www.nature.com/articles/s41598-025-10867-5}, doi = {/10.1038/s41598-025-10867-5}, year = {2025}, date = {2025-07-14}, journal = {Sci. Rep.}, volume = {15}, pages = {25349}, abstract = {We examine the interplay between the Nagaoka ferromagnetism and superconducting pairing correlations in a two-by-two quantum dot array proximitized by an s-wave superconductor. Focusing on the subgap regime, we determine the phase diagram of the system, demonstrating that Nagaoka ferromagnetism becomes greatly affected by the presence of superconductor and, depending on the strength of direct and crossed Andreev reflections, can be fully suppressed. This happens at some critical value of the induced on-dot pairing potential, for which we provide the corresponding analytical formulas in the limit of large Coulomb correlations. Moreover, we also shed light on the competition between Nagaoka ferromagnetism and superconductivity visible in the transport characteristics. Using the real-time diagrammatic technique, we determine the nonequilibrium current and differential conductance assuming that the quantum dot plaquette is weakly coupled to external lead that can be used to probe the system’s properties. We not only uncover the impact of Nagaoka ferromagnetism on the Andreev current and differential conductance, but also demonstrate a spin quintuplet blockade of the Andreev transport.}, keywords = {}, pubstate = {published}, tppubtype = {article} } We examine the interplay between the Nagaoka ferromagnetism and superconducting pairing correlations in a two-by-two quantum dot array proximitized by an s-wave superconductor. Focusing on the subgap regime, we determine the phase diagram of the system, demonstrating that Nagaoka ferromagnetism becomes greatly affected by the presence of superconductor and, depending on the strength of direct and crossed Andreev reflections, can be fully suppressed. This happens at some critical value of the induced on-dot pairing potential, for which we provide the corresponding analytical formulas in the limit of large Coulomb correlations. Moreover, we also shed light on the competition between Nagaoka ferromagnetism and superconductivity visible in the transport characteristics. Using the real-time diagrammatic technique, we determine the nonequilibrium current and differential conductance assuming that the quantum dot plaquette is weakly coupled to external lead that can be used to probe the system’s properties. We not only uncover the impact of Nagaoka ferromagnetism on the Andreev current and differential conductance, but also demonstrate a spin quintuplet blockade of the Andreev transport. |
| 360. | Maciej Błaszak, Krzysztof Marciniak, Błażej M. Szablikowski Non-Autonomous Soliton Hierarchies Symmetry , 17 (7), pp. 1103, 2025. @article{Błaszak2025, title = {Non-Autonomous Soliton Hierarchies}, author = {Maciej Błaszak and Krzysztof Marciniak and Błażej M. Szablikowski}, doi = {10.3390/sym17071103}, year = {2025}, date = {2025-07-09}, journal = {Symmetry }, volume = {17}, number = {7}, pages = {1103}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 359. | Kacper Wrześniewski, Ireneusz Weymann Annalen der Physik, 537 (9), pp. e00236, 2025. @article{Wrześniewski2025, title = {Effects of Correlated Hopping on Thermoelectric Response of a Quantum dot Strongly Coupled to Ferromagnetic Leads}, author = {Kacper Wrześniewski and Ireneusz Weymann}, url = {https://onlinelibrary.wiley.com/doi/10.1002/andp.202500236}, doi = {10.1002/andp.202500236}, year = {2025}, date = {2025-07-05}, journal = {Annalen der Physik}, volume = {537}, number = {9}, pages = {e00236}, abstract = {The impact of correlated hopping on thermoelectric transport is theoretically investigated through a quantum dot coupled to ferromagnetic leads. Using the accurate numerical renormalization group method, the transport characteristics are analyzed, focusing on the interplay between electronic correlations, spin-dependent transport processes, and thermoelectric response. The electrical conductance and thermopower are calculated as functions of the dot energy level, lead polarization, and the amplitude of correlated hopping. Moreover, the effect of competing correlations is analyzed on the Kondo resonance and discuss the asymmetry of conductance peaks under the influence of the exchange field. It is demonstrated that the presence of correlated hopping is responsible for asymmetric spin-dependent transport characteristics. These results provide valuable insight into how correlated hopping affects spin-dependent transport and thermoelectric efficiency in quantum dot systems with ferromagnetic contacts.}, keywords = {}, pubstate = {published}, tppubtype = {article} } The impact of correlated hopping on thermoelectric transport is theoretically investigated through a quantum dot coupled to ferromagnetic leads. Using the accurate numerical renormalization group method, the transport characteristics are analyzed, focusing on the interplay between electronic correlations, spin-dependent transport processes, and thermoelectric response. The electrical conductance and thermopower are calculated as functions of the dot energy level, lead polarization, and the amplitude of correlated hopping. Moreover, the effect of competing correlations is analyzed on the Kondo resonance and discuss the asymmetry of conductance peaks under the influence of the exchange field. It is demonstrated that the presence of correlated hopping is responsible for asymmetric spin-dependent transport characteristics. These results provide valuable insight into how correlated hopping affects spin-dependent transport and thermoelectric efficiency in quantum dot systems with ferromagnetic contacts. |
| 358. | Emil Siuda, Piotr Trocha Spin caloritronics of a quantum dot coupled to a magnetic insulator and normal metal Sci. Rep., 15 , pp. 23208, 2025. @article{Siuda2025b, title = {Spin caloritronics of a quantum dot coupled to a magnetic insulator and normal metal}, author = {Emil Siuda and Piotr Trocha}, url = {https://www.nature.com/articles/s41598-025-04413-6}, doi = {10.1038/s41598-025-04413-6}, year = {2025}, date = {2025-07-02}, journal = {Sci. Rep.}, volume = {15}, pages = {23208}, abstract = {We investigate the generation of spin current through temperature gradients in a quantum dot-based hybrid system. In particular, we study a quantum dot coupled to a magnetic insulator and a (non)magnetic metallic electrode. Generally, each electrode is maintained at a different temperature, resulting in a finite spin current. In this system, spin current of the magnonic type is converted into electric spin current, and vice versa, depending on the direction of the temperature gradient. We examine the influence of the magnonic energy-dependent density of states and many-body magnon interactions on thermally induced spin current. Additionally, the system can work as a spin Seebeck engine, converting heat into spin current. We establish the conditions under which the system operates as a heat engine and present results on its performance. Furthermore, we propose a device based on the system that acts as an efficient thermal spin-diode–allowing spin current to pass in one direction of the temperature bias while completely suppressing it in the opposite direction.}, keywords = {}, pubstate = {published}, tppubtype = {article} } We investigate the generation of spin current through temperature gradients in a quantum dot-based hybrid system. In particular, we study a quantum dot coupled to a magnetic insulator and a (non)magnetic metallic electrode. Generally, each electrode is maintained at a different temperature, resulting in a finite spin current. In this system, spin current of the magnonic type is converted into electric spin current, and vice versa, depending on the direction of the temperature gradient. We examine the influence of the magnonic energy-dependent density of states and many-body magnon interactions on thermally induced spin current. Additionally, the system can work as a spin Seebeck engine, converting heat into spin current. We establish the conditions under which the system operates as a heat engine and present results on its performance. Furthermore, we propose a device based on the system that acts as an efficient thermal spin-diode–allowing spin current to pass in one direction of the temperature bias while completely suppressing it in the opposite direction. |
| 357. | Lubomira Regeciova, Konrad J. Kapcia Localized fermions on the triangular lattice with Ising-like interactions Phys. Rev. E, 111 (6), pp. 064132, 2025. @article{Regeciova2025, title = {Localized fermions on the triangular lattice with Ising-like interactions}, author = {Lubomira Regeciova and Konrad J. Kapcia }, doi = {10.1103/4lmb-6qqv}, year = {2025}, date = {2025-06-24}, journal = {Phys. Rev. E}, volume = {111}, number = {6}, pages = {064132}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 356. | D. Maroulakos, C. Jasiukiewicz, A. Wal, A. Sinner, Ireneusz Weymann, T. Domański, L. Chotorlishvili Majorana signatures in the tripartite uncertainty relations with quantum memory Phys. Rev. B, 111 , pp. 224426, 2025. @article{Maroulakos2025, title = {Majorana signatures in the tripartite uncertainty relations with quantum memory}, author = {D. Maroulakos and C. Jasiukiewicz and A. Wal and A. Sinner and Ireneusz Weymann and T. Domański and L. Chotorlishvili}, url = {https://journals.aps.org/prb/abstract/10.1103/dxb2-15jf}, doi = {10.1103/dxb2-15jf}, year = {2025}, date = {2025-06-23}, journal = {Phys. Rev. B}, volume = {111}, pages = {224426}, abstract = {Quantumness imposes a fundamental limit on measurement accuracy. The paradigmatic cases are Heisenberg's uncertainty relation in the original formulation, Robertson's formulation, and improved uncertainty relations. However, the more universal measures are given in terms of quantum entropies. Uncertainties of measurements done on one quantum system correlated with another quantum system constitute a more intriguing question. Quantum correlations can influence the lower bound of uncertainties, and the reason for this is the quantum memory. In this article, we study uncertainties of measurements performed on one quantum dot correlated with the second one through the superconductor, hosting the Majorana boundary modes. We prove that the Majorana quasiparticles allow the uncertainties to reach the minimal possible lower bound. By rigorous theoretical considerations, we obtain the result of experimental relevance expressed in terms of only two parameters: the overlap between Majorana modes and their coupling strength with the quantum dots. We show that the overlap between Majorana modes reduces quantum uncertainties, which is a general result of fundamental importance. We also propose the protocol to measure spins in both quantum dots, consecutively, and demonstrate that the result of the second measurement would depend on the presence of Majorana quasiparticles. This could serve as an indirect tool for their empirical observation, which is of importance for the ongoing discussions concerning unambiguous detection of the Majorana quasiparticles in nanoscopic hybrid structures.}, keywords = {}, pubstate = {published}, tppubtype = {article} } Quantumness imposes a fundamental limit on measurement accuracy. The paradigmatic cases are Heisenberg's uncertainty relation in the original formulation, Robertson's formulation, and improved uncertainty relations. However, the more universal measures are given in terms of quantum entropies. Uncertainties of measurements done on one quantum system correlated with another quantum system constitute a more intriguing question. Quantum correlations can influence the lower bound of uncertainties, and the reason for this is the quantum memory. In this article, we study uncertainties of measurements performed on one quantum dot correlated with the second one through the superconductor, hosting the Majorana boundary modes. We prove that the Majorana quasiparticles allow the uncertainties to reach the minimal possible lower bound. By rigorous theoretical considerations, we obtain the result of experimental relevance expressed in terms of only two parameters: the overlap between Majorana modes and their coupling strength with the quantum dots. We show that the overlap between Majorana modes reduces quantum uncertainties, which is a general result of fundamental importance. We also propose the protocol to measure spins in both quantum dots, consecutively, and demonstrate that the result of the second measurement would depend on the presence of Majorana quasiparticles. This could serve as an indirect tool for their empirical observation, which is of importance for the ongoing discussions concerning unambiguous detection of the Majorana quasiparticles in nanoscopic hybrid structures. |
| 355. | Anand Manaparambil, Cǎtǎlin Paşcu Moca, Gergely Zaránd, Ireneusz Weymann Underscreened Kondo compensation in a superconductor Phys. Rev. B, 111 , pp. 235433, 2025. @article{Manaparambil2025b, title = {Underscreened Kondo compensation in a superconductor}, author = {Anand Manaparambil and Cǎtǎlin Paşcu Moca and Gergely Zaránd and Ireneusz Weymann}, url = {https://journals.aps.org/prb/abstract/10.1103/j7b4-ywmp}, doi = {10.1103/j7b4-ywmp}, year = {2025}, date = {2025-06-16}, journal = {Phys. Rev. B}, volume = {111}, pages = {235433}, abstract = {A magnetic impurity with a larger 𝑆=1 spin remains partially screened by the Kondo effect when embedded in a metal. However, when placed within an 𝑠-wave superconductor, the interplay between the superconducting energy gap Δ and the Kondo temperature 𝑇𝐾 induces a quantum phase transition from an underscreened doublet Kondo to an unscreened triplet phase, typically occurring when Δ/𝑇𝐾≈1. We investigate the Kondo compensation of the impurity spin resulting from this partial screening across the quantum phase transition, which together with the spin-spin correlation function serves as a measure of the Kondo cloud's integrity. Deep within the unscreened triplet phase, Δ/𝑇𝐾≫1, the compensation vanishes, signifying complete decoupling of the impurity spin from the environment, while in the partially screened doublet phase, Δ/𝑇𝐾≪1, it asymptotically approaches 1/2, indicating that half of the spin is screened. Notably, there is a universal jump in the compensation precisely at the phase transition, which we accurately calculate. The spin-spin correlation function exhibits an oscillatory pattern with an envelope function decaying as ≈1/𝑥 at short distances. At larger distances, the superconducting gap induces an exponentially decaying behavior ≈exp(−𝑥/𝜉Δ) governed by the superconducting correlation length 𝜉Δ, irrespective of the phase, without any distinctive features across the transition. Furthermore, the spectral functions of some relevant operators are evaluated and discussed. In terms of the methods used, a consistent description is provided through the application of multiplicative, numerical, and density-matrix renormalization group techniques.}, keywords = {}, pubstate = {published}, tppubtype = {article} } A magnetic impurity with a larger 𝑆=1 spin remains partially screened by the Kondo effect when embedded in a metal. However, when placed within an 𝑠-wave superconductor, the interplay between the superconducting energy gap Δ and the Kondo temperature 𝑇𝐾 induces a quantum phase transition from an underscreened doublet Kondo to an unscreened triplet phase, typically occurring when Δ/𝑇𝐾≈1. We investigate the Kondo compensation of the impurity spin resulting from this partial screening across the quantum phase transition, which together with the spin-spin correlation function serves as a measure of the Kondo cloud's integrity. Deep within the unscreened triplet phase, Δ/𝑇𝐾≫1, the compensation vanishes, signifying complete decoupling of the impurity spin from the environment, while in the partially screened doublet phase, Δ/𝑇𝐾≪1, it asymptotically approaches 1/2, indicating that half of the spin is screened. Notably, there is a universal jump in the compensation precisely at the phase transition, which we accurately calculate. The spin-spin correlation function exhibits an oscillatory pattern with an envelope function decaying as ≈1/𝑥 at short distances. At larger distances, the superconducting gap induces an exponentially decaying behavior ≈exp(−𝑥/𝜉Δ) governed by the superconducting correlation length 𝜉Δ, irrespective of the phase, without any distinctive features across the transition. Furthermore, the spectral functions of some relevant operators are evaluated and discussed. In terms of the methods used, a consistent description is provided through the application of multiplicative, numerical, and density-matrix renormalization group techniques. |
| 354. | Javid Naikoo, Ravindra W. Chhajlany, Adam Miranowicz Enhanced quantum sensing with hybrid exceptional-diabolic singularities New Journal of Physics, 27 (6), pp. 064505, 2025. @article{Naikoo_2025, title = {Enhanced quantum sensing with hybrid exceptional-diabolic singularities}, author = {Javid Naikoo and Ravindra W. Chhajlany and Adam Miranowicz}, url = {https://dx.doi.org/10.1088/1367-2630/addc12}, doi = {10.1088/1367-2630/addc12}, year = {2025}, date = {2025-06-01}, journal = {New Journal of Physics}, volume = {27}, number = {6}, pages = {064505}, publisher = {IOP Publishing}, abstract = {We report an enhanced sensitivity for detecting linear perturbations near hybrid (doubly degenerated) exceptional-diabolic (HED) singular points in a four mode bosonic system. The sensitivity enhancement is attributed to a singular response function, with the pole order determining the scaling of estimation error. At HED singular points, the error scaling exhibits a twofold improvement over non-HED singular points. The ultimate bound on estimation error is derived via quantum Fisher information, with heterodyne detection identified as the measurement achieving this optimal scaling.}, keywords = {}, pubstate = {published}, tppubtype = {article} } We report an enhanced sensitivity for detecting linear perturbations near hybrid (doubly degenerated) exceptional-diabolic (HED) singular points in a four mode bosonic system. The sensitivity enhancement is attributed to a singular response function, with the pole order determining the scaling of estimation error. At HED singular points, the error scaling exhibits a twofold improvement over non-HED singular points. The ultimate bound on estimation error is derived via quantum Fisher information, with heterodyne detection identified as the measurement achieving this optimal scaling. |
| 353. | Ephraim T Mathew, Andriy E. Serebryannikov, Jacek Jenczyk, Igor Iatsunskyi, Szymon Murawka, Mikołaj Lewandowski, Maciej Wiesner ACS Applied Materials & Interfaces, 2025, ISSN: 1944-8244. @article{Mathew2025, title = {Raman Scattering Enhancements Due to Super- and Subradiant Collective Plasmon Modes on Large-Area 2D-Au Arrays}, author = {Ephraim T Mathew and Andriy E. Serebryannikov and Jacek Jenczyk and Igor Iatsunskyi and Szymon Murawka and Mikołaj Lewandowski and Maciej Wiesner }, url = {https://doi.org/10.1021/acsami.5c04804}, doi = {10.1021/acsami.5c04804}, issn = {1944-8244}, year = {2025}, date = {2025-05-22}, journal = {ACS Applied Materials & Interfaces}, publisher = {American Chemical Society}, keywords = {}, pubstate = {published}, tppubtype = {article} } |
| 352. | Sara Memarzadeh, Mateusz Gołębiewski, Maciej Krawczyk, Jarosław W. Kłos Nucleation and arrangement of Abrikosov vortices in hybrid superconductor–ferromagnet nanostructures Nanoscale Horiz., 10 , pp. 1453 - 1464, 2025. @article{D4NH00618F, title = {Nucleation and arrangement of Abrikosov vortices in hybrid superconductor–ferromagnet nanostructures}, author = {Sara Memarzadeh and Mateusz Gołębiewski and Maciej Krawczyk and Jarosław W. Kłos}, url = {http://dx.doi.org/10.1039/D4NH00618F}, doi = {10.1039/D4NH00618F}, year = {2025}, date = {2025-05-21}, journal = {Nanoscale Horiz.}, volume = {10}, pages = {1453 - 1464}, publisher = {The Royal Society of Chemistry}, abstract = {This study investigates the nucleation, dynamics, and stationary configurations of Abrikosov vortices in hybrid superconductor–ferromagnet nanostructures subjected to inhomogeneous magnetic fields generated by a ferromagnetic nanodot. Employing the simulations based on time-dependent Ginzburg–Landau coupled with Maxwell's equations, we reveal the evolution of curved vortex structures that exhibit creep-like deformation before stabilizing. The interplay between vortices and currents confined within the superconducting nanoelement gives rise to unconventional stationary vortex arrangements, which evolve gradually with increasing magnetic field strength—a behavior absent in homogeneous fields. Our numerical results illustrate how the ferromagnetic element can control vortex configurations via a stray magnetic field—insights that are difficult to access experimentally or analytically. We demonstrate that the superconducting nanoelement can stabilize into distinct vortex states in response to even small system perturbations. This highlights the extreme sensitivity of the system and the richness of its dynamic behaviour, revealing complex pinning mechanisms and providing valuable insights into the optimisation of nanoscale superconducting systems.}, keywords = {}, pubstate = {published}, tppubtype = {article} } This study investigates the nucleation, dynamics, and stationary configurations of Abrikosov vortices in hybrid superconductor–ferromagnet nanostructures subjected to inhomogeneous magnetic fields generated by a ferromagnetic nanodot. Employing the simulations based on time-dependent Ginzburg–Landau coupled with Maxwell's equations, we reveal the evolution of curved vortex structures that exhibit creep-like deformation before stabilizing. The interplay between vortices and currents confined within the superconducting nanoelement gives rise to unconventional stationary vortex arrangements, which evolve gradually with increasing magnetic field strength—a behavior absent in homogeneous fields. Our numerical results illustrate how the ferromagnetic element can control vortex configurations via a stray magnetic field—insights that are difficult to access experimentally or analytically. We demonstrate that the superconducting nanoelement can stabilize into distinct vortex states in response to even small system perturbations. This highlights the extreme sensitivity of the system and the richness of its dynamic behaviour, revealing complex pinning mechanisms and providing valuable insights into the optimisation of nanoscale superconducting systems. |