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Entangled states in the two-mode coherent fields interacting with a two-level atom |
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| Authors: | Liu Xiao-Juan and Fang Mao-Fa |
| Affiliation: | Department of Physics, Hunan Normal University, Changsha 410081, China; Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; Department of Physics, Xiangtan Normal College, Xiangtan 411202, China |
| Abstract: | We investigate the entanglement properties of the two-mode coherent fields interacting with a two-level atom via the two-photon transition. We discuss the quantum entanglement between the two-mode coherent fields and the two-level atom by using the quantum reduced entropy and that between the two-mode coherent fields by using the quantum relative entropy. We also examine the influences of the initial states of the atom and the two-mode coherent fields on the quantum entanglement of the system. Our results show that three types of entangled states can be prepared via the two-mode coherent fields interacting with a two-level atom and choosing appropriately the initial-state parameters of the system. |
| Keywords: | two-mode coherent fields quantum entanglement reduced entropy relative entropy |
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