On the distribution of entanglement changes produced by unitary operations

被引：10

作者：

Batle, J

Plastino, AR

Casas, M ^{[1
]}

Plastino, A

机构：

[1] Univ Illes Balears, Dept Fis, E-07071 Palma de Mallorca, Spain

[2] Natl Univ La Plata, Fac Astron & Geophys, RA-1900 La Plata, Argentina

[3] Consejo Nacl Invest Cient & Tecn, Argentinas Natl Res Council, RA-1033 Buenos Aires, DF, Argentina

[4] Natl Univ La Plata, Dept Phys, RA-1900 La Plata, Argentina

来源：

PHYSICS LETTERS A | 2003年 / 307卷 / 5-6期

关键词：

quantum entanglement; unitary operations; quantum information theory;

D O I：

10.1016/S0375-9601(02)01665-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the change of entanglement of formation A E produced by a unitary transformation acting on a general (pure or. mixed) state p describing a system of two qubits. We study numerically the probabilities of obtaining different values of DeltaE, assuming that the initial state is randomly distributed in the space of all states according to the product measure recently introduced by Zyczkowski et al. [Phys. Rev. A 58 (1998) 883]. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：253 / 261

页数：9

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