Entanglement capacity of two-qubit unitary operator for rank two mixed states

被引：7

作者：

Di YaoMin ^{[1
]}

Liu Li ^{[1
]}

机构：

[1] Xuzhou Normal Univ, Dept Phys, Xuzhou 221116, Peoples R China

来源：

SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY | 2007年 / 50卷 / 06期

基金：

中国国家自然科学基金;

关键词：

two-qubit; unitary operator; mixed states; concurrence; entanglement capacity;

D O I：

10.1007/s11433-007-0075-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The entanglement capacity of two-qubit unitary operator acting on rank two mixed states in concurrence is discussed. The condition of perfect entangler is the same as that acting on pure states and the entanglement capacity is the mixing parameter v(1). For non-perfect entangler, the upper and lower bound of the entanglement capacity are given.

引用

页码：691 / 697

页数：7

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