Stable quantum interference enabled by coexisting detuned and resonant STIRAPs  

作　　者：Dan Liu Yichun Gao Jianqin Xu Jing Qian 刘丹;高益淳;许建琴;钱静(Department of Physics,School of Physics and Electronic Science,East China Normal University,Shanghai 200062,China)

机构地区：[1]Department of Physics,School of Physics and Electronic Science,East China Normal University,Shanghai 200062,China

出　　处：《Chinese Physics B》2021年第5期353-361,共9页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.11474094 and 11104076);the Science and Technology Commission of Shanghai Municipality,China(Grant No.18ZR1412800).

摘　　要：Inspired by a recent experiment[Phys.Rev.Lett.122253201(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 

分 类 号：O431.2[机械工程—光学工程]