Entanglement capacity of two-qubit unitary operator with the help of auxiliary system

被引：0
|
作者：
Hu Bao-Lin [1 ]
Di Yao-Min [1 ]
机构：
[1] Xuzhou Normal Univ, Dept Phys, Xuzhou 221116, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2007年 / 47卷 / 06期
关键词：
unitary operator; entanglement capacity; linear entropy; auxiliary system;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The entanglement capacity of general two-qubit unitary operators is studied when auxiliary systems are allowed, and the analytical results based on linear entropy when input states are disentangled are given. From the results the condition for perfect entangler, alpha(1) = alpha(2) = pi/4, is obtained. Contrary to the case without auxiliary system, the parameter alpha(3) may play active role to the entanglement capacity when auxiliary systems are allowed.
引用
收藏
页码：1029 / 1032
页数：4
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