Entanglement cost of bipartite mixed states -: art. no. 027901

被引：98

作者：

Vidal, G ^{[1
]}

Dür, W

Cirac, JI

机构：

[1] CALTECH, Inst Quantum Informat, Pasadena, CA 91125 USA

[2] Univ Munich, Sekt Phys, D-80333 Munich, Germany

[3] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.89.027901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We compute the entanglement cost of several families of bipartite mixed states, including arbitrary mixtures of two Bell states. This is achieved by developing a technique that allows us to ascertain the additivity of the entanglement of formation for any state supported on specific subspaces. As a side result, the proof of the irreversibility in asymptotic local manipulations of entanglement is extended to two-qubit systems.

引用

页数：4

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