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A MEASURE OF ENTANGLEMENT THROUGH QUANTUM TRAJECTORY APPROACH

X. L. HUANG

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China

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L. C. WANG

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China

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X. X. YI

School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China

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https://doi.org/10.1142/S0219749908003396Cited by:1 (Source: Crossref)

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.

Keywords:

PACS: 03.67.-a, 03.65.Ud

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