Circulant States with Vanishing Quantum Discord

被引：5

作者：

Bylicka, Bogna ^{[1
]}

Chruscinski, Dariusz ^{[1
]}

机构：

[1] Nicholas Copernicus Univ, Inst Phys, PL-87100 Torun, Poland

来源：

OPEN SYSTEMS & INFORMATION DYNAMICS | 2012年 / 19卷 / 01期

关键词：

ENTANGLEMENT;

D O I：

10.1142/S1230161212500060

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

We analyze a class of 2-qudit circulant states. They define a generalization of well-known 2-qubit X-states. We formulate necessary and sufficient criteria for vanishing of quantum discord. We illustrate our analysis by an important subclass of circulant states - the so-called Bell diagonal states.

引用

页数：15

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