Minimum detection efficiency for a loophole-free atom-photon bell experiment

被引：54

作者：

Cabello, Adan ^{[1
]}

Larsson, Jan-Ake ^{[2
]}

机构：

[1] Univ Seville, Dept Fis Aplicada 2, E-41012 Seville, Spain

[2] Linkoping Univ, Inst Matemat, SE-58183 Linkoping, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.98.220402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In Bell experiments, one problem is to achieve high enough photodetection to ensure that there is no possibility of describing the results via a local hidden-variable model. Using the Clauser-Horne inequality and a two-photon nonmaximally entangled state, a photodetection efficiency higher than 0.67 is necessary. Here we discuss atom-photon Bell experiments. We show that, assuming perfect detection efficiency of the atom, it is possible to perform a loophole-free atom-photon Bell experiment whenever the photodetection efficiency exceeds 0.50.

引用

页数：4

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