非线性原子-腔-光纤系统中的量子关联转移和量子态传输

doi:10.3969/j.issn.1007-5461.2021.03.015

量子电子学报 ›› 2021, Vol. 38 ›› Issue (3): 382-392.doi: 10.3969/j.issn.1007-5461.2021.03.015

非线性原子-腔-光纤系统中的量子关联转移和量子态传输

贺启亮∗, 丁敏, 宋晓书, 肖勇军, 吕兵

贵州师范大学物理与电子科学学院, 贵阳贵州550001

收稿日期:2020-07-03 修回日期:2020-11-17 出版日期:2021-05-28 发布日期:2021-05-28
通讯作者: E-mail: 36320197@qq.com
作者简介:贺启亮( 1982 - ), 贵州遵义人, 博士, 副教授, 硕士生导师, 主要从事量子光学与量子信息方面的研究。E-mail: 36320197@qq.com
基金资助:
Supported by National Natural Science Foundation of China (国家自然科学基金, 11364006, 11264008), Guizhou Provincial Science and Technology Foundation (贵州省科技计划项目, 黔科合LH字[2017] 7343), Doctor Funding of Guizhou Normal University (贵州师范大学博士基金), Key Laboratory of Low Dimensional Condensed Matter Physics of Higher Educational Institution of Guizhou Province (贵州省普通高等学校低维凝聚态物理重点实验室项目, 黔教合KY 字[2016]002)

Non-classical correlations and quantum state transfer in nonlinear atom-cavity-fiber system with Kerr medium

HE Qiliang∗, DING Min, SONG Xiaoshu, XIAO Yongjun, LYU Bing

School of Physics and Electronics, Guizhou Normal University, Guiyang 550001, China

Received:2020-07-03 Revised:2020-11-17 Published:2021-05-28 Online:2021-05-28

摘要/Abstract

摘要： 在光腔被非线性克尔介质充满的原子-腔-光纤系统中, 研究了非线性克尔介质对于不同原子系综之间量子态传输和非经典关联(量子纠缠, 量子失谐) 转移的影响。结果表明非线性克尔介质能够增加目标原子系综间量子态的保真度和非经典关联的数值, 减缓保真度和量子关联衰减的速率, 从而延长量子态传输和非经典关联转移存在的时间。此外, 利用迹距离的度量方法研究了非线性克尔介质对于系统中量子信息流动的影响, 发现非线性克尔介质能够减小迹距离衰减的速率, 减缓目标原子系综中量子信息的流出, 并增加其量子信息存储的时间。

关键词: 量子光学, 原子-腔-光纤系统, 非线性克尔介质, 非经典关联, 量子态传输

Abstract: The influence of nonlinear Kerr medium on non-classical correlations and quantum state transfer in an atom-cavity-fiber system with a cavity filled with nonlinear Kerr medium are investigated. Results show that Kerr medium can increase the amount of non-classical correlations and the fidelity of quantum state transfer, and slow down the decay rate of non-classical correlations and fidelity, which means that the time of non-classical correlation and quantum state transfer can be prolonged by adjusting Kerr medium. Furthermore, how Kerr medium affects the transfer of quantum information in the system is also explored by making use of the trace distance. It is found that the decay rate of trance distance can be reduced by Kerr medium, and the flow of quantum information can be suppressed as well, which indicates that the storage time of quantum information between target atoms can be increased.

Key words: quantum optics, atom-cavity-fiber system, nonlinear Kerr medium, non-classical correlation; quantum state transfer

中图分类号:

O431.2

贺启亮∗, 丁敏, 宋晓书, 肖勇军, 吕兵. 非线性原子-腔-光纤系统中的量子关联转移和量子态传输[J]. 量子电子学报, 2021, 38(3): 382-392.

HE Qiliang∗, DING Min, SONG Xiaoshu, XIAO Yongjun, LYU Bing. Non-classical correlations and quantum state transfer in nonlinear atom-cavity-fiber system with Kerr medium[J]. Chinese Journal of Quantum Electronics, 2021, 38(3): 382-392.

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非线性原子-腔-光纤系统中的量子关联转移和量子态传输

Non-classical correlations and quantum state transfer in nonlinear atom-cavity-fiber system with Kerr medium

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