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Entanglement oscillations in non-Markovian quantum channels | | Sabrina Maniscalco
; Stefano Olivares
; Matteo G. A. Paris
; | | Date: |
6 Feb 2007 | | Abstract: | We study the non-Markovian dynamics of a two-mode bosonic system interacting with two uncorrelated thermal bosonic reservoirs. We present the solution to the exact microscopic Master equation in terms of the quantum characteristic function and study in details the dynamics of entanglement for bipartite Gaussian states. In particular, we analyz the effects of short-time system-reservoir correlations on the separability thresholds and show that the relevant parameter is the reservoir spectral density. If the frequencies of the involved modes are within the reservoir spectral density entanglement persists for a longer time than in a Markovian channel. On the other hand, when the reservoir spectrum is out of resonance short-time correlations lead to a faster decoherence and to the appearance of entanglement oscillations. | | Source: | arXiv, quant-ph/0702055 | | Services: | Forum | Review | PDF | Favorites | |
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