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Coherence-enhanced entanglement between two atoms at high temperature
Authors:Hu Yao-Hu  Fang Mao-F  Jiang Chun-Lei  Zeng Ke
Affiliation:College of Physics and Information Science, Hunan NormalUniversity, Changsha 410081, China
Abstract:This paper studies the entanglement properties in a system of twodipole--dipole coupled two-level atoms resonantly interacting with asingle-mode thermal field. The results show that, when thetemperature of the cavity is high enough (corresponding to the largevalue of the mean photon number), the entanglement is greatlyenhanced due to the initial atomic coherence. These results arehelpful for controlling the atomic entanglement by changing theinitial parameters of the system.
Keywords:entanglement   single-mode thermal field   atomic coherence
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