FIDELITY FOR MIXED QUANTUM STATES

被引：1491

作者：

JOZSA, R ^{[1
]}

机构：

[1] UNIV PLYMOUTH,SCH MATH & STAT,PLYMOUTH PL4 8AA,DEVON,ENGLAND

来源：

JOURNAL OF MODERN OPTICS | 1994年 / 41卷 / 12期

关键词：

D O I：

10.1080/09500349414552171

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose a definition of fidelity for mixed quantum states in terms of Uhlmann's 'transition probability' formula F(rho(1),rho(2))={trace[(root rho(1) rho(2) x root rho(1))(1/2)]}(2) and give new elementary proofs of its essential properties.

引用

页码：2315 / 2323

页数：9

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