Minimum decision cost for quantum ensembles

被引：50

作者：

Brody, D ^{[1
]}

Meister, B ^{[1
]}

机构：

[1] ISAAC NEWTON INST MATH SCI,CAMBRIDGE CB3 0EH,ENGLAND

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.76.1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We calculate the binary decision costs of different strategies for measurement of a given ensemble of N independent and identically prepared polarized spin 1/2 particles. The results obtained prove that, for arbitrarily given values of the prior probabilities and an arbitrary number of constituent particles, the cost of a combined measurement is the same as that for sequential measurements of the individual particles.

引用

页码：1 / 5

页数：5

共 13 条

[1]

Berger JO., 1985, STATISTICAL DECISION

[2]

BRODY D, IN PRESS BAYESIAN IN

[3] INFORMATION AND QUANTUM MEASUREMENT [J].