Concurrence in the framework of coherent states

被引：47

作者：

Berrada, K. ^{[1
]}

Chafik, A. ^{[1
]}

Eleuch, H. ^{[2
,3
]}

Hassouni, Y. ^{[1
]}

机构：

[1] Fac Sci Rabat, Phys Theor Lab, Rabat, Morocco

[2] Texas A&M Univ, Inst Quantum Studies, College Stn, TX 77843 USA

[3] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

来源：

QUANTUM INFORMATION PROCESSING | 2010年 / 9卷 / 01期

关键词：

Quantum information; Entanglement; Concurrence; Coherent states; QUANTUM CRYPTOGRAPHY; ENTANGLEMENT; SEPARABILITY; PAIR;

D O I：

10.1007/s11128-009-0124-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The concurrence of a two-qubit nonorthogonal pure state is determined through the construction of this state in the language of spin coherent states. The generalization of this method to the case of a class of mixed states is given. The concurrence in this case is nothing but a function of the amplitude of the spin coherent states, it is shown also that probability present an interesting behavior.

引用

页码：13 / 26

页数：14

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