中国物理B ›› 2023, Vol. 32 ›› Issue (4): 44210-044210.doi: 10.1088/1674-1056/ac7bfc

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Effective dynamics and quantum state engineering by periodic kicks

Zhi-Cheng Shi(施志成)1,2, Zhen Chen(陈阵)1,2, Jian-Hui Wang(王建辉)1,2, Yan Xia(夏岩)1,2,†, and X X Yi(衣学喜)3,‡   

  1. 1 Fujian Key Laboratory of Quantum Information and Quantum Optics(Fuzhou University), Fuzhou 350108, China;
    2 Department of Physics, Fuzhou University, Fuzhou 350108, China;
    3 Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, China
  • 收稿日期:2022-04-28 修回日期:2022-06-20 接受日期:2022-06-27 出版日期:2023-03-10 发布日期:2023-03-23
  • 通讯作者: Yan Xia, X X Yi E-mail:xia-208@163.com;yixx@nenu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11805036, 12175033, and 12147206), the Natural Science Foundation of Fujian Province, China (Grant No. 2021J01575), the Natural Science Funds for Distinguished Young Scholar of Fujian Province, China (Grant No. 2020J06011), and the Project from Fuzhou University (Grant No. JG202001-2).

Effective dynamics and quantum state engineering by periodic kicks

Zhi-Cheng Shi(施志成)1,2, Zhen Chen(陈阵)1,2, Jian-Hui Wang(王建辉)1,2, Yan Xia(夏岩)1,2,†, and X X Yi(衣学喜)3,‡   

  1. 1 Fujian Key Laboratory of Quantum Information and Quantum Optics(Fuzhou University), Fuzhou 350108, China;
    2 Department of Physics, Fuzhou University, Fuzhou 350108, China;
    3 Center for Quantum Sciences and School of Physics, Northeast Normal University, Changchun 130024, China
  • Received:2022-04-28 Revised:2022-06-20 Accepted:2022-06-27 Online:2023-03-10 Published:2023-03-23
  • Contact: Yan Xia, X X Yi E-mail:xia-208@163.com;yixx@nenu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11805036, 12175033, and 12147206), the Natural Science Foundation of Fujian Province, China (Grant No. 2021J01575), the Natural Science Funds for Distinguished Young Scholar of Fujian Province, China (Grant No. 2020J06011), and the Project from Fuzhou University (Grant No. JG202001-2).

摘要: We study the kick dynamics of periodically driven quantum systems, and provide a time-independent effective Hamiltonian with the analytical form to reasonably describe the effective dynamics in a long timescale. It is shown that the effective coupling strength can be much larger than the coupling strength of the original system in some parameter regions, which stems from the zero time duration of kicks. Furthermore, different regimes can be transformed from and to each other in the same three-level system by only modulating the period of periodic kicks. In particular, the population of excited states can be selectively suppressed in periodic kicks, benefiting from the large detuning regime of the original system. Finally, some applications and physical implementation of periodic kicks are demonstrated in quantum systems. These unique features would make periodic kicks become a powerful tool for quantum state engineering.

关键词: periodic driving, δ function, quantum state engineering

Abstract: We study the kick dynamics of periodically driven quantum systems, and provide a time-independent effective Hamiltonian with the analytical form to reasonably describe the effective dynamics in a long timescale. It is shown that the effective coupling strength can be much larger than the coupling strength of the original system in some parameter regions, which stems from the zero time duration of kicks. Furthermore, different regimes can be transformed from and to each other in the same three-level system by only modulating the period of periodic kicks. In particular, the population of excited states can be selectively suppressed in periodic kicks, benefiting from the large detuning regime of the original system. Finally, some applications and physical implementation of periodic kicks are demonstrated in quantum systems. These unique features would make periodic kicks become a powerful tool for quantum state engineering.

Key words: periodic driving, δ function, quantum state engineering

中图分类号:  (Quantum optics)

  • 42.50.-p
42.50.Dv (Quantum state engineering and measurements) 02.30.Yy (Control theory)