Quantum homodyne tomography of a two-photon fock state

被引：174
|
作者：
Ourjoumtsev, Alexei [1 ]
Tualle-Brouri, Rosa [1 ]
Grangier, Philippe [1 ]
机构：
[1] CNRS, UMR 8501, Lab Charles Fabry, Inst Opt, F-91403 Orsay, France
来源：
PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 21期
关键词：
D O I：
10.1103/PhysRevLett.96.213601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present a continuous-variable experimental analysis of a two-photon Fock state of free-propagating light. This state is obtained from a pulsed nondegenerate parametric amplifier, which produces two intensity-correlated twin beams. Counting two photons in one beam projects the other beam in the desired two-photon Fock state, which is analyzed by using a pulsed homodyne detection. The Wigner function of the measured state is clearly negative. We developed a detailed analytic model which allows a fast and efficient analysis of the experimental results.
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页数：4
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