| 热辐射场中两个耦合的二能级原子量子态的纠缠 |
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| 引用本文： | 张登玉,谢利军,唐世清,詹孝贵,高峰. 热辐射场中两个耦合的二能级原子量子态的纠缠[J]. 量子光学学报, 2009, 15(3) |
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| 作者姓名： | 张登玉 谢利军 唐世清 詹孝贵 高峰 |
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| 作者单位： | 衡阳师范学院物理与电子信息科学系,湖南,衡阳,421008;衡阳师范学院物理与电子信息科学系,湖南,衡阳,421008;湘潭大学材料与光电物理学院,湖南,湘潭,411105 |
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| 基金项目： | 湖南省自然科学基金,Natural Science Foundation of Hunan Province |
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| 摘 要： | 两个偶极耦合的二能级原子置于热辐射场中,原子用泡利算符描述,环境用无穷的谐振子热库描述,运用密度矩阵方法,得到两能级原子密度矩阵元演化规律.针对三种不同的初始状态,利用共生纠缠度分析置于热辐射场中原子量子态的纠缠.结果表明:当两个原子初始处于不同量子叠加态时,原子的纠缠呈现出明显的差异.
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| 关 键 词： | 纠缠 热辐射场 两能级原子 共生纠缠度 |
Entanglement of the Coupling Two-level Atoms in Thermal Radiation Field |
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| ZHANG Deng-yu,XIE Li-jun,TANG Shi-qing,ZHAN Xiao-gui,GAO Feng. Entanglement of the Coupling Two-level Atoms in Thermal Radiation Field[J]. Acta Sinica Quantum Optica, 2009, 15(3) |
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| Authors: | ZHANG Deng-yu XIE Li-jun TANG Shi-qing ZHAN Xiao-gui GAO Feng |
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| Affiliation: | 1.Department of Physics and Electronic Information Science;Hengyang Normal University;Hengyang;Hunan 421008;China;2.Faculty of Material and Photoelectronic Physics;Xiangtan University;Xiangtan;Hunan 411105;China |
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| Abstract: | The two-level atom is described by Pauli sign and environment is described by infinite harmonic particle thermal reservoir. We have studied the entanglement of the coupling two-level atoms which are put in the thermal ra-diation field. The two-level atoms' reducible density rectangular array is obtained. We discuss the properties of en-tanglement by virtue of concurrence. It is shown that as the two two-level atoms are initially situated in different co-herent superposition states, entanglement of atoms have obvious dissimilarity. |
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| Keywords: | entanglement thermal radiation field two-level atom concurrence |
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