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噪声引入对EPR导引的影响

Influence of Introduced Noise on EPR Steering

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摘要

EPR(Einstein-Podolsky-Rosen)导引展现出一种不同于量子纠缠态与Bell非局域性的量子非局域性,其中单向EPR导引在量子秘密共享中尤为重要。提出了一种通过在EPR纠缠态的一方增加噪声来改变EPR导引特性的方案,在引入噪声之后,分析了导引参数与可变分束器的反射率之间的关系,并研究了EPR导引的方向由双向到单向的改变过程。该研究对非对称的量子非局域性操控以及量子信息传递过程中的量子控制具有重要意义。

Abstract

Einstein-Podolsky-Rosen (EPR) steering shows an intermediate type of quantum nonlocality which is distinct from both quantum entanglement and Bell’s nonlocality, especially, one-way EPR steering has a significant influence on the secure quantum secret sharing. A scheme to effectively change the characteristic of EPR steering, which is implemented by adding noise to one part of an EPR state, is presented. With the introduction of the noise, the relationships between the steering parameters and the reflectivity of variable beam splitter are analyzed, and the change process of the EPR steering direction from two way to one way is investigated. This study is of great importance in the asymmetric quantum nonlocality control and the quantum control in the process of quantum information transmission.

Newport宣传-MKS新实验室计划
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中图分类号:O437

DOI:10.3788/aos201838.0427002

所属栏目:量子光学

基金项目:国家自然科学基金(61008006,11674205,11604190)、国家自然科学基金重点项目(91536222)、国家重点研发计划(2016YFA0301404)、山西省“1331工程”重点学科建设计划

收稿日期:2017-10-10

修改稿日期:2017-11-07

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作者单位    点击查看

翟淑琴:山西大学物理电子工程学院, 山西 太原 030006
王薇:山西大学物理电子工程学院, 山西 太原 030006
杨荣国:山西大学物理电子工程学院, 山西 太原 030006
翟泽辉:山西大学物理电子工程学院, 山西 太原 030006

联系人作者:翟淑琴(xiaozhai@sxu.edu.cn)

备注:翟淑琴(1975-),女,博士,副教授,硕士生导师,主要从事量子光学、量子通信方面的研究。E-mail: xiaozhai@sxu.edu.cn

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引用该论文

Zhai Shuqin,Wang Wei,Yang Rongguo,Zhai Zehui. Influence of Introduced Noise on EPR Steering[J]. Acta Optica Sinica, 2018, 38(4): 0427002

翟淑琴,王薇,杨荣国,翟泽辉. 噪声引入对EPR导引的影响[J]. 光学学报, 2018, 38(4): 0427002

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