Quantum correlation measure in arbitrary bipartite systems
Quantum correlation measure in arbitrary bipartite systems
复制标题
任意二分系统中的量子相关性测度
DOI:
10.1209/0295-5075/107/10007
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发表时间:
2013-09
期刊:
影响因子:
--
通讯作者:
Song, He-Shan
中科院分区:
文献类型:
--
作者:
Wu, Shao-Xiong;Wang, Xiao-Guang;Yi, X. X.;Song, He-Shan
Quantum correlation with a novel definition is presented for an arbitrary bipartite quantum state in terms of the skew information of the complete set of rank-one orthogonal projectors. This definition not only inherits the good properties of skew information including the contractivity, but also shows a powerful analytic computability for a large range of states. In addition, the measure for a general state can be easily numerically obtained by the well-developed technique of the approximate joint diagonalization. As a comparison, we give both the analytic and the numerical quantum correlation for many high-dimensional states. The relation between our measure and quantum metrology is also analyzed.
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