A1 Refereed original research article in a scientific journal
Dynamics of Quantum Correlations in Two-Qubit Systems within Non-Markovian Environments
Authors: Rosario Lo Franco, Bruno Bellomo, Sabrina Maniscalco, Giuseppe Compagno
Publisher: WORLD SCIENTIFIC PUBL CO PTE LTD
Publishing place: SINGAPORE; 5 TOH TUCK LINK, SINGAPORE 596224, SINGAPORE
Publication year: 2013
Journal: International Journal of Modern Physics B
Journal name in source: International Journal of Modern Physics B
Journal acronym: Int.J.Mod.Phys.B
Number in series: 1-3
Volume: 27
Issue: 1-3
First page : 1345053
Last page: 1345053
Number of pages: 20
ISSN: 0217-9792
DOI: https://doi.org/10.1142/S0217979213450537
Abstract
Knowledge of the dynamical behavior of correlations with no classical counterpart, like entanglement, nonlocal correlations and quantum discord, in open quantum systems is of primary interest because of the possibility to exploit these correlations for quantum information tasks. Here we review some of the most recent results on the dynamics of correlations in bipartite systems embedded in non-Markovian environments that, with their memory effects, influence in a relevant way the system dynamics and appear to be more fundamental than the Markovian ones for practical purposes. Firstly, we review the phenomenon of entanglement revivals in a two-qubit system for both independent environments and a common environment. We then consider the dynamics of quantum discord in non-Markovian dephasing channel and briefly discuss the occurrence of revivals of quantum correlations in classical environments.
Knowledge of the dynamical behavior of correlations with no classical counterpart, like entanglement, nonlocal correlations and quantum discord, in open quantum systems is of primary interest because of the possibility to exploit these correlations for quantum information tasks. Here we review some of the most recent results on the dynamics of correlations in bipartite systems embedded in non-Markovian environments that, with their memory effects, influence in a relevant way the system dynamics and appear to be more fundamental than the Markovian ones for practical purposes. Firstly, we review the phenomenon of entanglement revivals in a two-qubit system for both independent environments and a common environment. We then consider the dynamics of quantum discord in non-Markovian dephasing channel and briefly discuss the occurrence of revivals of quantum correlations in classical environments.
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