Robust long-distance entanglement and a loophole-free bell test with ions and photons

被引：244

作者：

Simon, C

Irvine, WTM

机构：

[1] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[2] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.91.110405

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Two trapped ions that are kilometers apart can be entangled by the joint detection of two photons, each coming from one of the ions, in a basis of entangled states. Such a detection is possible with linear optical elements. The use of two-photon interference allows entanglement distribution free of interferometric sensitivity to the path length of the photons. The present method of creating entangled ions also opens up the possibility of a loophole-free test of Bell's inequalities.

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页数：4

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