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Indexed by:期刊论文

Date of Publication:2008-04-01

Journal:INTERNATIONAL JOURNAL OF QUANTUM INFORMATION

Included Journals:SCIE

Volume:6

Issue:2

Page Number:403-410

ISSN No.:0219-7499

Key Words:measure of entanglement; quantum trajectory approach; master equation

Abstract:We propose a measure of entanglement through the quantum trajectory approach. The advantage of this measure is that it can avoid the problem of finding all possible decompositions for mixed states, which is usually complicated. This method can be applied to any physical system whose time evolution is governed by the master equation. As an example, we calculate the entanglement of the following cases: ( A) entangled system composed of a pair of two- level atoms coupling to two separate baths and, ( B) two entangled modes subjected to two separate baths.