Density-matrix reconstruction by unbalanced homodyning

被引：49

作者：

Opatrny, T ^{[1
]}

Welsch, DG ^{[1
]}

机构：

[1] PALACKY UNIV, FAC NAT SCI, OLOMOUC 77146, CZECH REPUBLIC

来源：

PHYSICAL REVIEW A | 1997年 / 55卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.55.1462

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Recently a method for measuring quasidistributions of single-mode optical fields in unbalanced homodyne detection has been proposed [S. Wallentowitz and W. Vogel, Phys. Rev. A 53, 4528 (1996); K. Banaszek and K. Wodkiewicz, Phys. Rev. Lett. 76, 4344 (1996)]. We show that the scheme can be used for direct sampling of the signal-mode density matrix in the Fock basis. In this case it is sufficient to vary only the phase of the local oscillator, keeping its amplitude constant.

引用

页码：1462 / 1465

页数：4

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