Remarks on separability of compound quantum systems and time reversal

被引：6

作者：

Busch, P ^{[1
]}

Lahti, PJ ^{[1
]}

机构：

[1] TURKU UNIV,DEPT PHYS,FIN-20014 TURKU,FINLAND

来源：

FOUNDATIONS OF PHYSICS LETTERS | 1997年 / 10卷 / 02期

关键词：

entanglement; (in)separability; antiunitary maps; time reversal;

D O I：

10.1007/BF02764233

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A separability test for density matrices of compound quantum systems proposed recently by Peres is formulated in a manifestly basis independent way using antiunitary operators. We prove that the test amounts to a criterion for pure states, while it is known to fail to do so in the case of mixed states. An interesting connection with the operation of time reversal is thus exhibited.

引用

页码：113 / 117

页数：5

共 4 条

[1] COMPLETELY POSITIVE MAPPINGS IN QUANTUM DYNAMICS AND MEASUREMENT THEORY [J].