Tomographic Discord and Quantum Correlations in a System of Qubits

被引：10

作者：

Man'ko, Vladimir I. ^{[1
,2
]}

Yurkevich, Anatoli ^{[2
]}

机构：

[1] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

[2] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia

来源：

JOURNAL OF RUSSIAN LASER RESEARCH | 2013年 / 34卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

tomograms; local unitary transformation; quantum discord; REPRESENTATION;

D O I：

10.1007/s10946-013-9376-1

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We introduce the difference in quantum mutual information for a bipartite system of qubits and the minimum taken with respect to the local unitary transformation group as a characteristic of quantum correlations of the system tomographic mutual information. We study in detail the example of two qubits and the X state of two qubits.

引用

页码：463 / 467

页数：5

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