Stationary quantum memory effects induced by a periodic time-dependent system-environment coupling

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Yong Nan Sun - , University of Science and Technology of China (USTC) (Author)
  • Kimmo Luoma - , Chair of Theoretical Quantum Optics, University of Turku, TUD Dresden University of Technology (Author)
  • Zhao Di Liu - , University of Science and Technology of China (USTC) (Author)
  • Jyrki Piilo - , University of Turku (Author)
  • Chuan Feng Li - , University of Science and Technology of China (USTC) (Author)
  • Guang Can Guo - , University of Science and Technology of China (USTC) (Author)

Abstract

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.

Details

Original languageEnglish
Article number012213
JournalPhysical Review A
Volume108
Issue number1
Publication statusPublished - Jul 2023
Peer-reviewedYes

Keywords