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

被引：245
|
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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