Quantum-state homodyne measurement with vacuum ports

被引:38
|
作者
Zucchetti, A [1 ]
Vogel, W [1 ]
Welsch, DG [1 ]
机构
[1] UNIV JENA, INST THEORET PHYS, D-07743 JENA, GERMANY
关键词
D O I
10.1103/PhysRevA.54.856
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We show that the quantum state of an N-mode light field can be reconstructed from the difference statistics recorded in multiport homodyning with N unused input ports. The theory is applied to balanced homodyne six-port detection, which is shown to be suited for measuring the Q function of a single-mode radiation field.
引用
收藏
页码:856 / 862
页数:7
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