HILBERT-SCHMIDT MEASURE OF PAIRWISE QUANTUM DISCORD FOR THREE-QUBIT X STATES

被引：4

作者：

Daoud, M. ^{[1
,2
,3
]}

Laamara, R. Ahl ^{[4
,5
]}

Seddik, S. ^{[4
]}

机构：

[1] Max Planck Inst Phys Komplexer Syst, Dresden, Germany

[2] Abdus Salam Int Ctr Theoret Phys, Trieste, Italy

[3] Univ Ibnou Zohr, Dept Phys, Fac Sci, Agadir, Morocco

[4] LPHE Modeling & Simulat, Fac Sci, Rabat, Morocco

[5] Ctr Phys & Math, Rabat, Morocco

来源：

REPORTS ON MATHEMATICAL PHYSICS | 2015年 / 76卷 / 02期

关键词：

quantum information; entanglement; quantum discord; multi-qubit states; monogamy relation; ENTANGLEMENT; MONOGAMY;

D O I：

10.1016/S0034-4877(15)30030-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Hilbert-Schmidt distance between a mixed three-qubit state and its closest state is used to quantify the amount of pairwise quantum correlations in a tripartite system. Analytical expressions of geometric quantum discord are derived. A particular attention is devoted to two special classes of three-qubit X states. They include three-qubit states of W, GHZ and Bell type. We also discuss the monogamy property of geometric quantum discord in some mixed three-qubit systems.

引用

页码：207 / 230

页数：24

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