Entanglement of a two-particle Gaussian state interacting with a heat bath

Ghesquière, Anne and Dorlas, T. C. (2010) Entanglement of a two-particle Gaussian state interacting with a heat bath. (Preprint)

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Abstract

The effect of a thermal reservoir is investigated on a bipartite Gaussian state. We derive a pre-Lindblad master equation in the non-rotating wave approximation for the system. We then solve the master equation for a bipartite harmonic oscillator Hamiltonian with entangled initial state. We show that for strong damping the loss of entanglement is the same as for freely evolving particles. However, if the damping is small, the entanglement is shown to oscillate and eventually tend to a constant nonzero value.

Item Type: Article
Divisions: School of Theoretical Physics > Preprints
Date Deposited: 19 Jun 2018 13:47
Last Modified: 13 Jul 2018 10:41
URI: http://dair.dias.ie/id/eprint/516

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