How to measure squeezing and entanglement of Gaussian states without homodyning -: art. no. 063601

被引：55
|
作者：
Fiurásek, J
Cerf, NJ
机构：
[1] Free Univ Brussels, Ecole Polytech, QUIC, B-1050 Brussels, Belgium
[2] Palacky Univ, Dept Opt, Olomouc 77200, Czech Republic
来源：
PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 06期
关键词：
D O I：
10.1103/PhysRevLett.93.063601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We propose a scheme for measuring the squeezing, purity, and entanglement of Gaussian states of light that does not require homodyne detection. The suggested setup needs only beam splitters and single-photon detectors. Two-mode entanglement can be detected from coincidences between photodetectors placed on the two beams.
引用
收藏
页码：063601 / 1
页数：4
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