Quantum discord dynamical behaviors due to initial system-cavity correlations

Details Quantum discord dynamical behaviors due to initial system-cavity correlations Quantum discord dynamical behaviors due to initial system-cavity correlations

2010-07-09

arxiv.org/abs/1007.1492v1

Physics

Quantum Physics

Scientific paper

We analyze the roles of initial correlations between the two-qubit system and a dissipative cavity on quantum discord dynamics of two qubits. Considering two initial system-cavity states, we show that the initial system-cavity correlations not only can initially increase the two-qubit quantum discord but also would lead to a larger long-time quantum discord asymptotic value. Moreover, quantum discord due to initial correlations is more robust than the case of the initial factorized state. Finally, we show the initial correlations' importance for dynamics behaviors of mutual information and classical correlation.

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