Disentanglement by dissipative open system dynamics

被引：50

作者：

Dodd, PJ ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England

来源：

PHYSICAL REVIEW A | 2004年 / 69卷 / 05期

关键词：

D O I：

10.1103/PhysRevA.69.052106

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper investigates disentanglement as a result of evolution according to a class of master equations which include dissipation and interparticle interactions. Generalizing an earlier result of Diosi, the time taken for complete disentanglement iscalculated (i.e., for disentanglement from any other system). The dynamics of two harmonically coupled oscillators is solved in order to study the competing effects of environmental noise and interparticle coupling on disentanglement. An argument based on separability conditions for Gaussian states is used to arrive at a set of conditions on the couplings sufficient for all initial states to disentangle for good after a finite time.

引用

页码：052106 / 1

页数：10

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