# Correlated Relation between Quantum Discord and Entanglement of Two-Atom in Thermal Reservoirs

Authors: Xue-Qun Yan; Zhuan-Lin Yue
Journal: Journal of Atomic and Molecular Physics
 (2014)

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## Abstract

We study the time evolution of quantum discord and entanglement of a two-qubit system in thermal reservoirs. We find that there are no simple ordering relations between entanglement and quantum discord for the dynamical evolution behavior; that is, quantum discord may be smaller or larger than entanglement in the evolution process. However, a strong correlation between changes of the ordering relations and the mean photon number is found. In addition, it also shows that entanglement is not the strongest form of nonclassicality.


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## Body


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*Source: 564805-2014-04-10.xml*