Reconstruction and engineering of quantum states of atoms in alkali metal vapor
Dr. Marek Kopciuch, ISQI

Date, Time
17.04, 15:00

Location
hybrid meetnig (room 16), link (MSTeams) >>>

With the rapid development of various concepts in quantum information and metrology, there is a continuous need to verify emerging ideas. Unfortunately, many studies can only be conducted using complex and costly setups that trap ultracold atomic gases or ions. Our approach aims to utilize a simpler and more accessible platform for testing quantum protocols, which is especially important from the perspective of quantum metrology. This seminar introduces an alternative approach focused on collective quantum states formed within a macroscopic cloud of  approximately 10⁹ atoms in room-temperature alkali-metal vapors.

In this talk, I will present the current state of development of our experimental research platform for quantum information studies. I will begin by introducing our method for quantum state tomography (QST), highlighting new techniques that enhance its stability. Next, I will discuss a newly developed approach for generating nonlinearity within our system, which plays a crucial role in expanding the range of accessible quantum phenomena by providing new possibilities for quantum state control. Additionally, I will introduce our progress in quantum process tomography, demonstrating its feasibility within our platform. Finally, I will showcase a practical application of our system in the study of a new class of metrological states—Perfect Quantum Protractors (PQP).