Distilling perfect GHZ states from two copies of non-GHZ-diagonal mixed states

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成果类型：

期刊论文

作者：

Wang, Xin-Wen*;Tang, Shi-Qing;Yuan, Ji-Bing;Zhang, Deng -Yu

通讯作者：

Wang, Xin-Wen

作者机构：

[Yuan, Ji-Bing; Wang, Xin-Wen; Tang, Shi-Qing; Zhang, Deng -Yu] Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.

[Wang, Xin-Wen] Hunan Normal Univ, Key Lab Low Dimens Quantum Struct, Changsha 410081, Peoples R China.

[Wang, Xin-Wen] Hunan Normal Univ, Quantum Control Minist Educ, Changsha 410081, Peoples R China.

[Wang, Xin-Wen] Hunan Normal Univ, Synerget Innovat Ctr Quantum Effects & Applicat, Changsha 410081, Peoples R China.

[Yuan, Ji-Bing] Inst Theoret Phys, CAB Key Lab Theoret Phys, Beijing 100190, Peoples R China.

通讯机构：

[Wang, Xin-Wen] H

Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.

语种：

英文

关键词：

Entanglement purification;Non-GHZ-diagonal states;Non-asymptotic way;Perfect output states

期刊：

Optics Communications

ISSN：

0030-4018

年：

2017

卷：

392

页码：

185-189

DOI：

10.1016/j.optcom.2016.12.002

基金类别：

NSFCNational Natural Science Foundation of China (NSFC) [11547258]; HNNSF [2015JJ3029, 2016JJ2009]; Scientific Research Fund of Hunan Provincial Education DepartmentHunan Provincial Education Department [15A028, 16B036]; Opening fund of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education [QSQC1207]

机构署名：

本校为第一且通讯机构

院系归属：

物理与电子工程学院

摘要：

It has been shown that a nearly pure Greenberger-Horne-Zeilinger (GHZ) state could be distilled from a large (even infinite) number of GHZ-diagonal states that can be obtained by depolarizing general multipartite mixed states (non-GHZ-diagonal states) through sequences of (probabilistic) local operations and classical communications. We here demonstrate that perfect GHZ states can be extracted, with certain probabilities, from two copies of non-GHZ-diagonal mixed states when some conditions are satisfied. This result implies that it is not necessary to depolarize these entangled mixed states t...

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Distilling perfect GHZ states from two copies of non-GHZ-diagonal mixed states

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