Dynamics of quantum correlations in two-qubit systems within non-Markovian environments

Rosario Lo Franco, Bruno Bellomo, Sabrina Maniscalco, Giuseppe Compagno

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162 Citations (Scopus)

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.

Original languageEnglish
Article number1345053
Number of pages20
JournalInternational Journal of Modern Physics B
Volume27
Issue number1-3
DOIs
Publication statusPublished - 30 Jan 2013

Keywords

  • Open quantum systems
  • dynamics of quantum correlations
  • non-Markovian environments
  • PHOTONIC BAND-GAP
  • SPONTANEOUS EMISSION
  • SUDDEN-DEATH
  • BELL INEQUALITY
  • SOLID-STATE
  • ENTANGLEMENT
  • DECOHERENCE
  • DISENTANGLEMENT
  • ATOMS
  • EVOLUTION

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