Loophole-free Bell test with one atom and less than one photon on average

被引：19

作者：

Sangouard, N. ^{[1
]}

Bancal, J. -D. ^{[1
]}

Gisin, N. ^{[1
]}

Rosenfeld, W. ^{[2
]}

Sekatski, P. ^{[1
]}

Weber, M. ^{[2
]}

Weinfurter, H. ^{[2
]}

机构：

[1] Univ Geneva, Appl Phys Grp, CH-1211 Geneva 4, Switzerland

[2] Univ Munich, Fak Phys, DE-80799 Munich, Germany

来源：

PHYSICAL REVIEW A | 2011年 / 84卷 / 05期

关键词：

INEQUALITY; VIOLATION;

D O I：

10.1103/PhysRevA.84.052122

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider the entanglement between two internal states of a single atom and two photon number states describing either the vacuum or a single photon and thus containing, on average, less than one photon. We show that this intriguing entanglement can be characterized through substantial violations of a Bell inequality by performing homodyne detections on the optical mode. We present the experimental challenges that need to be overcome to pave the way toward a loophole-free Bell test.

引用

页数：5

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