Quantum coherence and correlations in quantum system

被引：234

作者：

Xi, Zhengjun ^{[1
]}

Li, Yongming ^{[1
]}

Fan, Heng ^{[2
,3
]}

机构：

[1] Shaanxi Normal Univ, Coll Comp Sci, Xian 710062, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[3] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

关键词：

ENTANGLEMENT; INFORMATION; DISCORD;

D O I：

10.1038/srep10922

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Criteria of measure quantifying quantum coherence, a unique property of quantum system, are proposed recently. In this paper, we first give an uncertainty-like expression relating the coherence and the entropy of quantum system. This finding allows us to discuss the relations between the entanglement and the coherence. Further, we discuss in detail the relations among the coherence, the discord and the deficit in the bipartite quantum system. We show that, the one-way quantum deficit is equal to the sum between quantum discord and the relative entropy of coherence of measured subsystem.

引用

页数：9

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