Separable states can be used to distribute entanglement -: art. no. 037902

被引：111

作者：

Cubitt, TS

Verstraete, F

Dür, W

Cirac, JI

机构：

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

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

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.91.037902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that no entanglement is necessary to distribute entanglement; that is, two distant particles can be entangled by sending a third particle that is never entangled with the other two. Similarly, two particles can become entangled by continuous interaction with a highly mixed mediating particle that never itself becomes entangled. We also consider analogous properties of completely positive maps, in which the composition of two separable maps can create entanglement.

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页数：4

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