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Observable Correlations in Two-Qubit States

文献类型：期刊论文

作者Luo, Shunlong1; Zhang, Qiang2
刊名JOURNAL OF STATISTICAL PHYSICS
出版日期2009-07-01
卷号136期号:1页码:165-177
关键词Quantum mutual information Von Neumann measurement Observable correlations Classical correlations Lindblad conjecture
ISSN号0022-4715
DOI10.1007/s10955-009-9779-0
英文摘要The total correlations in a bipartite quantum state are well quantified by the quantum mutual information, the amount of which is not necessarily fully extractable by local measurements. The observable correlations are the maximal correlations that can be extracted via local measurements, and have an intuitive interpretation as a measure of classical correlations. We evaluate the observable correlations for generic two-qubit states and obtain analytical expressions in some particular cases. The intricate and subtle relationships among the total, quantum and classical correlations are illustrated in terms of observable correlations. In the course, we also disprove an intuitive conjecture of Lindblad which states that the classical correlations account for at least half of the total correlations, or equivalently, correlations are more classical than quantum.
WOS研究方向Physics
语种英语
WOS记录号WOS:000268327600012
出版者SPRINGER
源URL[http://ir.amss.ac.cn/handle/2S8OKBNM/7305]  
专题应用数学研究所
通讯作者Luo, Shunlong
作者单位1.Chinese Acad Sci, Acad Math & Syst Sci, Beijing 100190, Peoples R China
2.City Univ Hong Kong, Dept Math, Hong Kong, Hong Kong, Peoples R China
推荐引用方式
GB/T 7714		 Luo, Shunlong,Zhang, Qiang. Observable Correlations in Two-Qubit States[J]. JOURNAL OF STATISTICAL PHYSICS,2009,136(1):165-177.
APA Luo, Shunlong,&Zhang, Qiang.(2009).Observable Correlations in Two-Qubit States.JOURNAL OF STATISTICAL PHYSICS,136(1),165-177.
MLA Luo, Shunlong,et al."Observable Correlations in Two-Qubit States".JOURNAL OF STATISTICAL PHYSICS 136.1(2009):165-177.

入库方式： OAI收割

来源：数学与系统科学研究院

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