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非厄米受激拉曼绝热捷径的量子分束

Beam Splitting via Non-Hermitian Stimulated Raman Shortcut to Adiabatic Passage

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摘要

针对存在增益损耗的三能级非厄米量子系统,提出了一种新型的非厄米受激拉曼绝热捷径(NH-STIRSAP)技术。该技术基于传统的受激拉曼绝热通道(STIRAP),通过灵活调控系统的非厄米项,使系统演化中的非绝热耦合得到有效抵消,从而加速绝热演化过程。详细的数值计算和理论分析结果证实,基于所提技术,系统的绝热演化速度快,且制备的量子态具有高保真度。并展示了所提技术在量子分束方面的应用。与传统绝热捷径技术相比,NH-STIRSAP新技术具有更广泛的应用。

Abstract

For a three-level non-Hermitian quantum system with gain and loss, a new technique called non-Hermitian stimulated Raman shortcut to adiabatic passage (NH-STIRSAP) is proposed. This technique is based on the traditional stimulated Raman adiabatic passage (STIRAP), and the non-Hermitian terms in the NH system can be flexibly manipulated to effectively compensate the nonadiabatic coupling in the evolution and thus to accelerate the whole adiabatic evolution process. The detailed numerical calculation and theoretical analysis results confirm the rapidness and high-fidelity of the proposed technique. In addition, its application in beam splitting is demonstrated. Compared with the traditional shortcuts to adiabaticity, the new NH-STIRSAP technique has a wider range of applications.

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中图分类号:O437

DOI:10.3788/CJL202047.0912001

所属栏目:量子光学

基金项目:国家自然科学基金、上海市科委能力建设项目、上海市自然基金量子调控专项、上海市高校特聘教授东方学者跟踪计划;

收稿日期:2020-03-09

修改稿日期:2020-04-20

网络出版日期:2020-09-01

作者单位    点击查看

汤开:上海大学理学院物理系, 上海 200444中国科学院上海光学精密机械研究所强场激光物理国家重点实验室和超强激光科学卓越中心, 上海 201800
胡正峰:中国科学院上海光学精密机械研究所量子光学重点实验室, 上海 201800
刘呈普:中国科学院上海光学精密机械研究所强场激光物理国家重点实验室和超强激光科学卓越中心, 上海 201800
陈玺:上海大学理学院物理系, 上海 200444

联系人作者:胡正峰(zfhu@siom.ac.cn); 刘呈普(chpliu@siom.ac.cn); 陈玺(xchen@shu.edu.cn);

备注:国家自然科学基金、上海市科委能力建设项目、上海市自然基金量子调控专项、上海市高校特聘教授东方学者跟踪计划;

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引用该论文

Tang Kai,Hu Zhengfeng,Liu Chengpu,Chen Xi. Beam Splitting via Non-Hermitian Stimulated Raman Shortcut to Adiabatic Passage[J]. Chinese Journal of Lasers, 2020, 47(9): 0912001

汤开,胡正峰,刘呈普,陈玺. 非厄米受激拉曼绝热捷径的量子分束[J]. 中国激光, 2020, 47(9): 0912001

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