Imperfect photodetection as projection onto mixed states

被引：63

作者：

Barnett, SM ^{[1
]}

Phillips, LS

Pegg, DT

机构：

[1] Univ Strathclyde, Dept Phys & Appl Phys, Glasgow G4 0NG, Lanark, Scotland

[2] NTT, Basic Res Labs, Atsugi, Kanagawa 24301, Japan

[3] Griffith Univ, Fac Sci, Brisbane, Qld 4111, Australia

来源：

OPTICS COMMUNICATIONS | 1998年 / 158卷 / 1-6期

基金：

英国工程与自然科学研究理事会; 澳大利亚研究理事会;

关键词：

photodetection; mixed states;

D O I：

10.1016/S0030-4018(98)00511-2

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We provide an expression for the state of a single field mode, conditioned only on the outcome of an imperfect photon-counting measurement. This suggests that we can view such a measurement as projection onto one of a non-orthogonal set of mixed states. We briefly discuss some of the implications of this result for state preparation. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：45 / 49

页数：5

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