Non-Markovian Dynamics of Quantum and Classical Correlations in the Presence of System-Bath Coherence

We present a detailed study on the dynamics of two-qubit correlations in non-Markovian environments, applying the hierarchy equations approach. This treatment is free from the limitation of perturbative, Markovian or rotating wave approximations. It is shown that crossovers and sudden changes in the...

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Bibliographic Details
Published inChinese physics letters Vol. 28; no. 12; pp. 120302 - 1-120302-4
Main Authors Li, Chuan-Feng (传锋李), Wang, Hao-Tian (浩田汪), Yuan, Hong-Yuan (弘渊袁), Ge, Rong-Chun (荣春葛), Guo, Guang-Can (光灿郭)
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.12.2011
Subjects
Approximation
Correlation
Dynamic tests
Dynamical systems
Dynamics
Hierarchies
Mathematical analysis
Qubits (quantum computing)
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ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/28/12/120302

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Summary:We present a detailed study on the dynamics of two-qubit correlations in non-Markovian environments, applying the hierarchy equations approach. This treatment is free from the limitation of perturbative, Markovian or rotating wave approximations. It is shown that crossovers and sudden changes in the classical and quantum correlations can appear when the strength of the interaction between qubits is gradually reduced. For some special initial states, there are even sudden transitions between the classical and quantum correlations.
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ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/28/12/120302