Quantum Correlations of Two Two-level Atoms Interacting with a Single Mode Vacuum Field

被引：0
作者：
Ke Zeng
Mao-Fa Fang
机构：
[1] Hunan Normal University,Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education, Institute of Physics
[2] Changsha University,Department of Electronic and Communication Engineering
来源：
International Journal of Theoretical Physics | 2015年 / 54卷
关键词：
Quantum correlation; Quantum discord; Quantum entanglement; Dipole-dipole interaction;
D O I：
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学科分类号：
摘要：
The quantum correlations (QC) of two two–level atoms interacting with a single mode vacuum field are investigated. The relationship between the quantum discord (QD) and the entanglement of formation (EOF), the influence of the atomic dipole-dipole interaction along with two-atom initial states on QC of two atoms are discussed. The results indicate that when two-atom is initially in an entangled state, QD is consistent with EOF. Compared with the quantumness of correlations, the latter is always larger than the former, and the larger the initial QE, the larger the QD. Meanwhile, there is no occurrence of sudden death phenomenon of QC throughout the temporal evolution. Moreover, QD is more robust than QE under strong dipole-dipole interaction, and then the relative stable QC resources can be achieved.
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页码：1207 / 1215
页数：8
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