Entanglement of two atoms interacting with a dissipative coherent cavity field without rotating wave approximation |
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| Authors: | Kang Guo-Dong Fang Mao-F Ouyang Xi-Cheng and Deng Xiao-Juan |
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| Institution: | College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;College of Physics and Information Science, Hunan Normal University, Changsha 410081, China;College of Physics and Information Science, Hunan Normal University, Changsha 410081, China |
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| Abstract: | Considering two identical two-level atoms interacting with a single-model dissipative coherent cavity field without rotating wave approximation, we explore the entanglement dynamics of the two atoms prepared in different states using concurrence. Interestingly, our results show that the entanglement between the two atoms that initially disentangled will come up to a large constant rapidly, and then keeps steady in the following time or always has its maximum when prepared in some special Bell states. The model considered in this study is a good candidate for quantum information processing especially for quantum computation as steady high-degree atomic entanglement resource obtained in dissipative cavity. |
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| Keywords: | atomic entanglement Tavis--Cummings model rotating wave approximation characteristic function |
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