Correlated Relation between Quantum Discord and Entanglement of Two-Atom in Thermal Reservoirs. (10th April 2014)

• Record Type: Journal Article
• Authors: Yan, Xue-Qun; Yue, Zhuan-Lin
• Other Names: Han Keli Academic Editor.
• Is Part Of: Journal of atomic and molecular physics. Volume 2014(2014)
• Publication Date: 2014-04-10
• Subjects: Nuclear physics -- Periodicals; Molecules -- Periodicals; Atoms -- Periodicals; Atoms; Molecules; Nuclear physics; Periodicals; Electronic journals; 539.7
• DOI: 10.1155/2014/564805
• Languages: English
• ISSNs: 2314-8039

Abstract

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.