AIP conference proceedings

Evolution of Quantum Entanglement in Open Systems

Аурелиан Исар, Mădălin O. Bunoiu, Iosif Malaescu

Published Jan 1, 2010• 0 citations

Abstract

In the framework of the theory of open systems based on completely positive quantum dynamical semigroups, we give a description of the continuous‐variable entanglement for a system consisting of two uncoupled harmonic oscillators interacting with a thermal environment. Using Peres‐Simon necessary sufficient criterion for separability of two‐mode Gaussian states, we show that for some values of diffusion coefficient, dissipation constant and temperature of the environment, the state keeps for all times its initial type: separable or entangled. In other cases, entanglement generation, entanglement sudden death or a periodic collapse revival of entanglement take place.

DOI: 10.1063/1.3482232

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