Quantum dynamical semigroups and non-decomposable positive maps

被引：20
|
作者：
Benatti, F
Floreanini, R [1 ]
Piani, M
机构：
[1] Ist Nazl Fis Nucl, Sez Trieste, I-34100 Trieste, Italy
[2] Univ Trieste, Dipartimento Fis Teor, I-34014 Trieste, Italy
来源：
PHYSICS LETTERS A | 2004年 / 326卷 / 3-4期
关键词：
open systems; entanglement; non-decomposable positive maps;
D O I：
10.1016/j.physleta.2004.04.046
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study dynamical semigroups of positive, but not completely positive maps on finite-dimensional bipartite systems and analyze properties of their generators in relation to non-decomposability and bound-entanglement. An example of non- decomposable semigroup leading to a (4 x 4)-dimensional bound-entangled density matrix is explicitly obtained. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：187 / 198
页数：12
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