Peculiarities of quantum discord's geometric measure

被引：10

作者：

Batle, J. ^{[1
,2
]}

Plastino, A. ^{[1
,2
,3
]}

Plastino, A. R. ^{[4
,5
]}

Casas, M. ^{[1
,2
]}

机构：

[1] Univ Illes Balears, Dept Fis, Palma de Mallorca 07122, Spain

[2] Univ Illes Balears, IFISC, Palma de Mallorca 07122, Spain

[3] Natl Univ La Plata, IFLP CCT CONICET, RA-1900 La Plata, Argentina

[4] Natl Univ La Plata, CREG UNLP CONICET, RA-1900 La Plata, Argentina

[5] Univ Granada, Inst Carlos Fis Teor & Computac 1, Granada, Spain

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL | 2011年 / 44卷 / 50期

关键词：

STATISTICAL-MECHANICS; XY-MODEL; ENTANGLEMENT; VOLUME; SET;

D O I：

10.1088/1751-8113/44/50/505304

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Some properties of the quantum discord based on the geometric measure advanced by Dakic et al (2010 Phys. Rev. Lett. 105 190502) are discussed here by recourse to a systematic survey of the two-qubit state-space, with emphasis on Werner and MEM states. We explore the dependence of quantum discord on the degree of mixedness of the bipartite states, and also its connection with non-locality as measured by the maximum violation of a Bell inequality within the CHSH scenario. Some considerations regarding the XY model are also made.

引用

页数：13

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