ITP OpenIR  > 理论物理所2017年知识产出
Distilling perfect GHZ states from two copies of non-GHZ-diagonal mixed states
Wang, XW; Tang, SQ; Yuan, JB; Zhang, DY; Wang, XW (reprint author), Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.
2017
发表期刊OPTICS COMMUNICATIONS
卷号392页码:185-189
文章类型Article
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 to the GHZ-diagonal type, and that they are better than GHZ-diagonal states for distillation of pure GHZ states. We find a wide class of multipartite entangled mixed states that fulfill the requirements. Moreover, we display that the obtained result can be applied to practical noisy environments, e.g., amplitude-damping channels. Our findings provide an important complementarity to conventional GHZ-state distillation protocols (designed for GHZ-diagonal states) in theory, as well as having practical applications.
关键词Entanglement Purification Non-ghz-diagonal States Non-asymptotic Way Perfect Output States
学科领域Optics
资助者NSFC [11547258] ; NSFC [11547258] ; HNNSF [2015JJ3029, 2016JJ2009] ; HNNSF [2015JJ3029, 2016JJ2009] ; Scientific Research Fund of Hunan Provincial Education Department [15A028, 16B036] ; Scientific Research Fund of Hunan Provincial Education Department [15A028, 16B036] ; Opening fund of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education [QSQC1207] ; Opening fund of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education [QSQC1207] ; NSFC [11547258] ; NSFC [11547258] ; HNNSF [2015JJ3029, 2016JJ2009] ; HNNSF [2015JJ3029, 2016JJ2009] ; Scientific Research Fund of Hunan Provincial Education Department [15A028, 16B036] ; Scientific Research Fund of Hunan Provincial Education Department [15A028, 16B036] ; Opening fund of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education [QSQC1207] ; Opening fund of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education [QSQC1207]
DOIhttp://dx.doi.org/10.1016/j.optcom.2016.12.002
关键词[WOS]NOISY CHANNELS ; ENTANGLEMENT PURIFICATION ; WEAK MEASUREMENT ; QUANTUM ; DISTILLATION ; PROTOCOLS
语种英语
资助者NSFC [11547258] ; NSFC [11547258] ; HNNSF [2015JJ3029, 2016JJ2009] ; HNNSF [2015JJ3029, 2016JJ2009] ; Scientific Research Fund of Hunan Provincial Education Department [15A028, 16B036] ; Scientific Research Fund of Hunan Provincial Education Department [15A028, 16B036] ; Opening fund of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education [QSQC1207] ; Opening fund of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education [QSQC1207] ; NSFC [11547258] ; NSFC [11547258] ; HNNSF [2015JJ3029, 2016JJ2009] ; HNNSF [2015JJ3029, 2016JJ2009] ; Scientific Research Fund of Hunan Provincial Education Department [15A028, 16B036] ; Scientific Research Fund of Hunan Provincial Education Department [15A028, 16B036] ; Opening fund of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education [QSQC1207] ; Opening fund of Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education [QSQC1207]
WOS类目Optics
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22051
专题理论物理所2017年知识产出
通讯作者Wang, XW (reprint author), Hengyang Normal Univ, Coll Phys & Elect Engn, Hengyang 421002, Peoples R China.
推荐引用方式
GB/T 7714
Wang, XW,Tang, SQ,Yuan, JB,et al. Distilling perfect GHZ states from two copies of non-GHZ-diagonal mixed states[J]. OPTICS COMMUNICATIONS,2017,392:185-189.
APA Wang, XW,Tang, SQ,Yuan, JB,Zhang, DY,&Wang, XW .(2017).Distilling perfect GHZ states from two copies of non-GHZ-diagonal mixed states.OPTICS COMMUNICATIONS,392,185-189.
MLA Wang, XW,et al."Distilling perfect GHZ states from two copies of non-GHZ-diagonal mixed states".OPTICS COMMUNICATIONS 392(2017):185-189.
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