Experimental realization of optimal detection strategies for overcomplete states

被引：79

作者：

Clarke, RBM

Kendon, VM ^{[1
]}

Chefles, A

Barnett, SM

Riis, E

Sasaki, M

机构：

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

[2] Univ Hertfordshire, Dept Phys Sci, Hatfield AL10 9AB, Herts, England

[3] Minist Posts & Telecommun, Commun Res Lab, Tokyo 1848795, Japan

来源：

PHYSICAL REVIEW A | 2001年 / 64卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.64.012303

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present the results of generalized measurements of optical polarization designed to provide one of three or four distinct outcomes. This has allowed us to discriminate between nonorthogonal polarization states with an error probability that is close to the minimum allowed by quantum theory. Employing these optimal detection strategies on sets of three (trine) or four (tetrad) equiprobable symmetric nonorthogonal polarization states, we obtain a mutual information that exceeds the maximum value attainable using conventional (von Neumann) polarization measurements.

引用

页码：123031 / 1230313

页数：13

共 29 条

[1]

[Anonymous], 1993, Quantum Theory: Concepts and Methods, Fundamental Theories of Physics

[2] Optimum measurements for discrimination among symmetric quantum states and parameter estimation [J].