CSpace  > 应用数学研究所
From quantum coherence to quantum correlations
Sun, Yuan1; Mao, Yuanyuan; Luo, Shunlong
Source PublicationEPL
AbstractIn quantum mechanics, quantum coherence of a state relative to a quantum measurement can be identified with the quantumness that has to be destroyed by the measurement. In particular, quantum coherence of a bipartite state relative to a local quantum measurement encodes quantum correlations in the state. If one takes minimization with respect to the local measurements, then one is led to quantifiers which capture quantum correlations from the perspective of coherence. In this vein, quantum discord, which quantifies the minimal correlations that have to be destroyed by quantum measurements, can be identified as the minimal coherence, with the coherence measured by the relative entropy of coherence. To advocate and formulate this idea in a general context, we first review coherence relative to Luders measurements which extends the notion of coherence relative to von Neumann measurements (or equivalently, orthonomal bases), and highlight the observation that quantum discord arises as minimal coherence through two prototypical examples. Then, we introduce some novel measures of quantum correlations in terms of coherence, illustrate them through examples, investigate their fundamental properties and implications, and indicate their applications to quantum metrology. Copyright (C) EPLA, 2017
Funding ProjectNational Center for Mathematics and Interdisciplinary Sciences, Chinese Academy of Sciences[Y029152K51] ; Key Laboratory of Random Complex Structures and Data Science, Chinese Academy of Sciences[2008DP173182]
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000418889300003
Citation statistics
Document Type期刊论文
Corresponding AuthorSun, Yuan
Affiliation1.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Sun, Yuan,Mao, Yuanyuan,Luo, Shunlong. From quantum coherence to quantum correlations[J]. EPL,2017,118(6):7.
APA Sun, Yuan,Mao, Yuanyuan,&Luo, Shunlong.(2017).From quantum coherence to quantum correlations.EPL,118(6),7.
MLA Sun, Yuan,et al."From quantum coherence to quantum correlations".EPL 118.6(2017):7.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Sun, Yuan]'s Articles
[Mao, Yuanyuan]'s Articles
[Luo, Shunlong]'s Articles
Baidu academic
Similar articles in Baidu academic
[Sun, Yuan]'s Articles
[Mao, Yuanyuan]'s Articles
[Luo, Shunlong]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Sun, Yuan]'s Articles
[Mao, Yuanyuan]'s Articles
[Luo, Shunlong]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.