| 纠缠态原子与压缩真空场Raman 相互作用的量子信息保真度 |
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| 引用本文： | 田永红,徐大海,韩立波. 纠缠态原子与压缩真空场Raman 相互作用的量子信息保真度[J]. 原子与分子物理学报, 2006, 23(2): 255-261 |
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| 作者姓名： | 田永红 徐大海 韩立波 |
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| 作者单位： | 1. 长江大学物理科学与技术学院,荆州,430023;中国科技大学量子信息重点实验室,合肥,230026
2. 长江大学物理科学与技术学院,荆州,430023 |
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| 基金项目： | 湖北省高等学校科研基金(2002B04002)，湖北省高层次人才项目. |
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| 摘 要： | 利用全量子理论和数值计算方法研究了两个全同的纠缠二能级原子与压缩真空场Raman相互作用的量子信息保真度.结果表明,系统、原子和场的保真度随初始光场的压缩参数的增加而急剧减小,且与两原子体系的纠缠度和原子间偶极-偶极相互作用强度相关联.
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| 关 键 词： | 关键词:量子光学 纠缠态原子 压缩真空场 纠缠度 偶极-偶极相互作用 |
| 文章编号： | 1000-0364（2006）02-0255-07 |
| 收稿时间： | 2005-01-01 |
| 修稿时间： | 2005-01-01 |
Fidelily of quantum information in a pair atoms of entanglement state interacting with the squeezed vacuum field |
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| TIAN Yong-hong,XU Da-hai,HAN Li-bo. Fidelily of quantum information in a pair atoms of entanglement state interacting with the squeezed vacuum field[J]. Journal of Atomic and Molecular Physics, 2006, 23(2): 255-261 |
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| Authors: | TIAN Yong-hong XU Da-hai HAN Li-bo |
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| Affiliation: | 1. College of Physical Science and Technology, Yangtze University, Jingzhou 430023 ,P. R. China; 2. Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei 230026 ,P. R. China |
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| Abstract: | The fidelities of quantum information of two identical two-level atoms of entanglement state Raman interacting with the squeezed vacuum field are studied by means of the fully quantum theory and numerical calculations.The results shows the fidelity of system,atoms and field will drastically decrease as the squeezing parameter of the initial light increases,and that the fidelity is correlated with the degree of entanglement of the initial two identical two-level atoms and the intensity of dipole-dipole interaction between atoms. |
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| Keywords: | Quantum optics fidelity of quantum atoms of entanglement state the degree of entanglement squeezed vacuum field dipole-dipole interaction |
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