A1 Refereed original research article in a scientific journal
Stationary quantum memory effects induced by a periodic time-dependent system-environment coupling
Authors: Sun Yong-Nan, Luoma Kimmo, Liu Zhao-Di, Piilo Jyrki, Li Chuan-Feng, Guo Guang-Can
Publisher: American Physical Society
Publication year: 2023
Journal: Physical Review A
Journal name in source: Physical Review A
Article number: 012213
Volume: 108
Issue: 1
eISSN: 2469-9934
DOI: https://doi.org/10.1103/PhysRevA.108.012213(external)
Web address : https://doi.org/10.1103/PhysRevA.108.012213(external)
Periodical driving often leads to nontrivial steady states. In the context of open systems, such states may have nonvanishing currents. In this work, we experimentally study the time-discrete open system dynamics of a two-level system where the system-environment coupling is varied periodically. The two-level system is decoded on the transverse polarization and its environment on the frequency degrees of freedom of a single photon. The dynamics is implemented using linear optics. We find that the periodic driving leads to nonvanishing bidirectional information flow between the open system and the environment. We develop a comprehensive theoretical model which explains the experimental findings.