Data di Pubblicazione:
2009
Citazione:
Continuous variable entanglement dynamics in structured reservoirs / R. Vasile, S. Olivares, M. G. A. Paris, S. Maniscalco. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 80:6(2009), pp. 062324.062324.1-062324.062324.11.
Abstract:
We address the evolution of entanglement in bimodal continuous variable quantum systems interacting with
two independent structured reservoirs. We derive an analytic expression for the entanglement of formation
without performing the Markov and the secular approximations and study in details the entanglement dynamics
for various types of structured reservoirs and for different reservoir temperatures, assuming the two modes
initially excited in a twin-beam state. Our analytic solution allows us to identify three dynamical regimes
characterized by different behaviors of the entanglement: the entanglement sudden death, the non-Markovian
revival and the non-secular revival regimes. Remarkably, we find that, contrarily to the Markovian case, the
short-time system-reservoir correlations in some cases destroy quickly the initial entanglement even at zero
temperature.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
R. Vasile, S. Olivares, M. G. A. Paris, S. Maniscalco
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