Quantum Correlation Dynamics of Motive Atoms in Tavis-Cummings Model

Abstract

Abstract: By using the method of numerical calculation, the quantum correlation dynamics of two Motive atoms is investigated in Tavis-Cummings Model in which two motive atoms interact with the Fock state field. The effects of the initial entanglement of the two atoms and the number of Fock state field and the atomic movement on the entanglement and quantum discord are analyzed. The results show initial entanglement is different, the time evolution of atoms’ quantum entanglement and quantum discord is different; with the increase of the number of photon, the phenomenon of sudden death and birth of quantum entanglement between two atoms occurs, while quantum discord keeps nonzero and the time evolution of quantum entanglement and quantum discord becomes faster; atomic movement can make quantum entanglement and quantum discord have a periodic evolution and the increase of the field model structure parameter can make the period of quantum entanglement and quantum discord be shorter. It is found that quantum entanglement and quantum discord are similar by the time evolution curves.

Key words: Quantum optics; Quantum discord; Concurrence; Quantum correlation

CLC Number:

O431

GAO Deying, Wang Fujun. Quantum Correlation Dynamics of Motive Atoms in Tavis-Cummings Model[J]. J4, 2016, 33(2): 208-214.

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