| 三能级原子与耦合腔相互作用系统中的纠缠特性 |
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| 引用本文： | 卢道明.三能级原子与耦合腔相互作用系统中的纠缠特性[J].物理学报,2012,61(3):30301-030301. |
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| 作者姓名： | 卢道明 |
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| 作者单位： | 武夷学院电子工程系,武夷山,354300 |
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| 基金项目： | 福建省自然科学基金(批准号: 2008J0217) 资助的课题. |
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| 摘 要： | 采用Negativity熵来度量两个子系统间的纠缠,利用数值计算方法研究了简并Λ型三能级原子和简并V型三能级原子与耦合腔共振相互作用系统中原子之间、腔场之间和原子与腔场间的纠缠特性.给出了系统初始激发数为1时系统态矢的演化公式;讨论了腔场间的耦合系数变化对纠缠特性的影响.研究结果表明:随腔场间的耦合系数增大,原子间的纠缠增强,腔场间的纠缠减弱.
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| 关 键 词： | 量子光学 三能级原子 耦合腔 量子纠缠 |
| 收稿时间： | 2011-04-19 |
The entanglement properties in the system of a two three-level atoms trapped in coupled cavities |
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| Lu Dao-Ming.The entanglement properties in the system of a two three-level atoms trapped in coupled cavities[J].Acta Physica Sinica,2012,61(3):30301-030301. |
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| Authors: | Lu Dao-Ming |
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| Institution: | Department of Electronic Engineering, Wuyi University, Wuyishan 354300, China |
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| Abstract: | We study the entanglement dynamics of the system composed of a A-type atom and a V-type atom resonantly interacting with two coupled cavities.The evolution of the state vector of the system is given.We investigate the evolutions of atom-atom entanglement, cavity-cavity entanglement,and atom-cavity entanglement by Negativity.The influences of cavity-cavity coupling coefficient on the entanglements are discussed.The results obtained by the numerical method show that the atom-atom entanglement is strengthened and the cavity-cavity entanglement is weakened with the increase of the cavity-cavity coupling coefficient. |
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| Keywords: | quantum optics three level atom coupled cavities quantum entanglement |
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