| 激光强度涨落对两囚禁离子纠缠度的影响 |
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| 引用本文： | 范朝阳,王中结. 激光强度涨落对两囚禁离子纠缠度的影响[J]. 量子电子学报, 2011, 28(5): 577-582. DOI: 10.3969/j.issn.1007-5461.2011.05.011 |
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| 作者姓名： | 范朝阳 王中结 |
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| 作者单位： | 安徽师范大学物理与电子信息学院, 安徽 芜湖 241000 |
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| 基金项目： | 安徽省自然科学基金(090412060); 安徽省教育厅自然科学基金(KJ2008A029)资助项目 |
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| 摘 要： | 囚禁离子的纠缠态在量子计算和量子信息方面有极为重要的应用。由于量子系统的特性，激光强度不可避免的发生涨落，其对囚禁离子的纠缠度有显著影响。从反J-C模型出发，利用共生纠缠度标准，分析了激光强度涨落对系统纠缠动力学的影响，并与利用J-C模型时的情形做了适当对比。结果显示：激光强度涨落产生的噪声使两离子纠缠度随时间呈现类似指数衰减；激光强度较弱时，利用正反J-C模型所得系统纠缠动力学有显著差别。
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| 关 键 词： | 量子光学 强度涨落 平均光子数 纠缠动力学 共生纠缠度 |
| 收稿时间： | 2010-09-28 |
| 修稿时间： | 2010-12-22 |
Influence of laser intensity fluctuations on entanglement of two trapped ions |
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| FAN Zhao-yang,WANG Zhong-jie. Influence of laser intensity fluctuations on entanglement of two trapped ions[J]. Chinese Journal of Quantum Electronics, 2011, 28(5): 577-582. DOI: 10.3969/j.issn.1007-5461.2011.05.011 |
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| Authors: | FAN Zhao-yang WANG Zhong-jie |
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| Affiliation: | College of Physics and Electronic Information, Anhui Normal University, Wuhu 241000, China |
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| Abstract: | Entangled state of trapped ions has many very important applications in quantum computation and quantum information.Due to the characteristics of quantum systems,the occurrence of laser intensity fluctuations is inevitable,and it has significant influence to the entanglement of trapped ions.With the anti-model of J-C,the effect of intensity fluctuations on dynamics of entanglement of system was studied by computing concurrence and a rough comparison between the model of J-C and the anti-model of J-C was als... |
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| Keywords: | quantum optics intensity fluctuation average photon number entanglement dynamics concurrence |
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