| 双光子Jaynes-Cummings模型中运动原子与光场的纠缠特性 |
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| 引用本文： | 张春强,谢芳森. 双光子Jaynes-Cummings模型中运动原子与光场的纠缠特性[J]. 激光杂志, 2007, 28(2): 70-72 |
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| 作者姓名： | 张春强 谢芳森 |
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| 作者单位： | 江西师范大学物理与通信电子学院,江西南昌,330022;江西师范大学物理与通信电子学院,江西南昌,330022 |
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| 摘 要： | 用量子信息理论研究具有原子运动的双光子Jaynes-Cummings模型中运动原子与光场的纠缠特性.结果表明:当运动原子的场模结构参数p取值较小时,系统的纠缠度不具有周期振荡特性,在p取值较大时,系统的纠缠度有明显的周期振荡特性,且振荡周期是原子静止情况下的2倍;在运动原子处于基态或激发态时,系统处于消纠缠状态,当运动原子处在相干叠加态时,原子才与场发生纠缠.
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| 关 键 词： | 原子反转 双光子J-C模型 纠缠度 |
| 文章编号： | 0253-2743（2007）02-0070-03 |
| 收稿时间： | 2006-08-05 |
| 修稿时间： | 2006-08-05 |
The entangled properties of motorial atom and cavity field in two-photon Jaynes-Cummings model |
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| ZHANG Chun-qang,XIE Fang-sen. The entangled properties of motorial atom and cavity field in two-photon Jaynes-Cummings model[J]. Laser Journal, 2007, 28(2): 70-72 |
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| Authors: | ZHANG Chun-qang XIE Fang-sen |
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| Affiliation: | College of Physics and Communication Electronics, Jiangxi Normal University, Nanchang 330022, China |
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| Abstract: | The entangled properties of motorial atom and field in the two-photon Jaynes-Cummings model with atomic motion are studied by using the quantum information theory.It is shown that:(1) When the parameter p of the field model structure with atomic motion is smaller,the entanglement of system is not provided with the characteristic of periodic oscillations,when the value of p is greater,the entanglement of system is obviously provided with the characteristic of periodic oscillations,the oscillation period is as much again as atom is resting.When motorial atom is prepared in ground state or excited state,the system is in the disentangled state;when motorial atom is prepared in coherent superpositions states,the entanglement occurs between motorial atom and field. |
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| Keywords: | alomic inversion two- photon Jaynes- Cummthgs model the degree of entanglement |
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