Abstract This paper studies the entanglement properties in a system of two dipole--dipole coupled two-level atoms resonantly interacting with a single-mode thermal field. The results show that, when the temperature of the cavity is high enough (corresponding to the large value of the mean photon number), the entanglement is greatly enhanced due to the initial atomic coherence. These results are helpful for controlling the atomic entanglement by changing the initial parameters of the system.
Received: 16 August 2007
Revised: 05 September 2007
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 10374025), Hunan
Provincial Natural Science Foundation of China (Grant No 07JJ3013)
and the Foundation of Hunan Provincial Education Department of China
(Grant Nos 06A038 and
Cite this article:
Hu Yao-Hua(胡要花), Fang Mao-Fa(方卯发), Jiang Chun-Lei(姜春蕾), and Zeng Ke(曾可) Coherence-enhanced entanglement between two atoms at high temperature 2008 Chin. Phys. B 17 1784
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