中国物理B ›› 2021, Vol. 30 ›› Issue (5): 53701-053701.doi: 10.1088/1674-1056/abe0c5

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Stable quantum interference enabled by coexisting detuned and resonant STIRAPs

Dan Liu(刘丹), Yichun Gao(高益淳), Jianqin Xu(许建琴), and Jing Qian(钱静)   

  1. Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
  • 收稿日期:2020-10-25 修回日期:2020-12-30 接受日期:2021-01-28 出版日期:2021-05-14 发布日期:2021-05-14
  • 通讯作者: Jing Qian E-mail:jqian1982@gmail.com
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474094 and 11104076) and the Science and Technology Commission of Shanghai Municipality, China (Grant No. 18ZR1412800).

Stable quantum interference enabled by coexisting detuned and resonant STIRAPs

Dan Liu(刘丹), Yichun Gao(高益淳), Jianqin Xu(许建琴), and Jing Qian(钱静)   

  1. Department of Physics, School of Physics and Electronic Science, East China Normal University, Shanghai 200062, China
  • Received:2020-10-25 Revised:2020-12-30 Accepted:2021-01-28 Online:2021-05-14 Published:2021-05-14
  • Contact: Jing Qian E-mail:jqian1982@gmail.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11474094 and 11104076) and the Science and Technology Commission of Shanghai Municipality, China (Grant No. 18ZR1412800).

摘要: Inspired by a recent experiment [Phys. Rev. Lett. 122 253201(2019)] that an unprecedented quantum interference was observed in the way of stimulated Raman adiabatic passage (STIRAP) due to the coexisting resonant- and detuned-STIRAPs, we comprehensively study this effect. Our results uncover the scheme robustness towards any external-field fluctuations coming from laser intensity noise and imperfect resonance condition, as well as the persistence of high-contrast interference pattern even when more nearby excited levels are involved. We verify that an auxiliary dynamical phase accumulated in hold time caused by the presence of the quasi-dark state in detuned-STIRAP can sensitively manipulate the visibility and frequency of the interference pattern, representing a new hallmark to measure the hyperfine energy accurately. The robust stability of the scheme comes from the intrinsic superiority embedded in the STIRAP mechanism that preserves the coherence of population transfer, which promises a remarkable performance of quantum interference in a practical implementation.

关键词: quantum interference effect, stimulated Raman adiabatic passage, multi-level system

Abstract: Inspired by a recent experiment [Phys. Rev. Lett. 122 253201(2019)] that an unprecedented quantum interference was observed in the way of stimulated Raman adiabatic passage (STIRAP) due to the coexisting resonant- and detuned-STIRAPs, we comprehensively study this effect. Our results uncover the scheme robustness towards any external-field fluctuations coming from laser intensity noise and imperfect resonance condition, as well as the persistence of high-contrast interference pattern even when more nearby excited levels are involved. We verify that an auxiliary dynamical phase accumulated in hold time caused by the presence of the quasi-dark state in detuned-STIRAP can sensitively manipulate the visibility and frequency of the interference pattern, representing a new hallmark to measure the hyperfine energy accurately. The robust stability of the scheme comes from the intrinsic superiority embedded in the STIRAP mechanism that preserves the coherence of population transfer, which promises a remarkable performance of quantum interference in a practical implementation.

Key words: quantum interference effect, stimulated Raman adiabatic passage, multi-level system

中图分类号:  (Atom interferometry techniques)

  • 37.25.+k
33.40.+f (Multiple resonances (including double and higher-order resonance processes, such as double nuclear magnetic resonance, electron double resonance, and microwave optical double resonance)) 42.25.Hz (Interference) 03.65.Ta (Foundations of quantum mechanics; measurement theory)