两体系统量子相干性的动力学和守恒

doi:10.3969/j.issn.1007-5461.2021.04.006

量子电子学报 ›› 2021, Vol. 38 ›› Issue (4): 444-453.doi: 10.3969/j.issn.1007-5461.2021.04.006

两体系统量子相干性的动力学和守恒

高德营∗, 李宁

( 聊城大学东昌学院, 山东聊城 252000 )

收稿日期:2021-02-08 修回日期:2021-03-22 出版日期:2021-07-28 发布日期:2021-07-27
通讯作者: E-mail: gaodeying@126.com
作者简介:高德营( 1980 - ), 山东阳谷人, 博士, 副教授, 主要从事量子光学和量子信息方面的研究。 E-mail: gaodeying@126.com
基金资助:
Supported by National Natural Science Foundation of China (国家自然科学基金, 61675115), Planning Subject for the 13th Five Year Plan of Shandong Province Education Sciences (山东省教育科学“十三五”规划课题, 独立学院工科大学物理课程群的构建研究, 2020ZC273), Aeronautical Science Foundation of China (航空科学基金, 201834Y2001), PhD Research Startup Foundation of Dongchang College of Liaocheng University (聊城大学东昌学院博士科研基金)

Dynamics and conservation of quantum coherence in a two-body system

GAO Deying∗, LI Ning

( College of Dong Chang, Liaocheng University, Liaocheng 252000, China )

Received:2021-02-08 Revised:2021-03-22 Published:2021-07-28 Online:2021-07-27

摘要/Abstract

摘要： 针对两个初始处于类 Werner 态的原子分别与两个独立零温真空库相互耦合的复合系统, 研究了子系统的量子纠缠和量子相干性动力学演化特性。研究表明两原子的量子纠缠和量子相干性受初始态和纯度的影响, 且各子系统的量子纠缠和量子相干性分别相互转移, 并满足相应的守恒式。表现为初始的类 Bell 态和纯度决定各子系统的量子纠缠和量子相干性满足的守恒式; 而对于同一类 Bell 态, 子系统的量子纠缠和量子相干性的守恒式不受马尔科夫或者非马尔科夫环境的影响。

关键词: 量子光学, 量子纠缠, 量子相干性, 非马尔科夫

Abstract: The dynamical evolution of quantum entanglement and quantum coherence of two atoms in an extended Werner-like state coupled with two independent zero temperature vacuum reservoirs is studied. It is found that the quantum entanglement and quantum coherence of two atoms are affected by the initial state and purity, and the quantum entanglement and quantum coherence of each subsystem can transfer to each other and satisfy the corresponding conservation equations. It is shown that the initial Bell-like state and purity determine the conservation equations of quantum entanglement and quantum coherence, and for the same Bell-like state, the conservation of quantum entanglement and quantum coherence is not affected by Markovian or non-Markovian environment.

Key words: quantum optics, quantum entanglement, quantum coherence, non-Markovian

中图分类号:

O431.2

高德营∗, 李宁. 两体系统量子相干性的动力学和守恒[J]. 量子电子学报, 2021, 38(4): 444-453.

GAO Deying∗, LI Ning. Dynamics and conservation of quantum coherence in a two-body system[J]. Chinese Journal of Quantum Electronics, 2021, 38(4): 444-453.

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两体系统量子相干性的动力学和守恒

Dynamics and conservation of quantum coherence in a two-body system

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