| 驻波激光场中囚禁离子内外自由度的周期纠缠 |
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| 引用本文： | 方卯发,刘翔. 驻波激光场中囚禁离子内外自由度的周期纠缠[J]. 物理学报, 2001, 50(12): 2363-2368 |
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| 作者姓名： | 方卯发 刘翔 |
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| 作者单位： | 湖南师范大学理学院物理系,长沙410081 |
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| 基金项目： | 国家自然科学基金(批准号:19874020)资助的课题. |
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| 摘 要： | 在Lamb-Dicke极限下,利用幺正变换,将处于驻波激光场中任意位置的囚禁离子哈密顿量变换为离子裸态基中的Jaynes-Commings模型哈密顿量,研究了其内外自由度的量子熵和纠缠.结果表明,在非共振条件下,囚禁离子系统内外自由度之间存在周期纠缠关键词：驻波激光场囚禁离子内外自由度周期纠缠
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| 关 键 词： | 驻波激光场 囚禁离子 内外自由度 周期纠缠 |
| 文章编号： | 1000-3290/2001/50(12)2363-06 |
| 收稿时间： | 2001-03-28 |
| 修稿时间： | 2001-08-09 |
PERIODIC ENTANGLEMENT BETWEEN THE INTERNAL AND EXTERANL DEGREE OF FREEDOM OF A TRAPPED ION IN A STANDING WAVE LASER |
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| FANG MAO-FA and LIU XIANG. PERIODIC ENTANGLEMENT BETWEEN THE INTERNAL AND EXTERANL DEGREE OF FREEDOM OF A TRAPPED ION IN A STANDING WAVE LASER[J]. Acta Physica Sinica, 2001, 50(12): 2363-2368 |
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| Authors: | FANG MAO-FA and LIU XIANG |
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| Abstract: | We have investigated the quantum entropy and entanglement of the internal and external degrees of freedom of a trapped ion in a standing wave laser by transforming the Hamiltonian to that in the Jaynes-Cummings system for the bare basis of the trapped ion under the Lamb-Dicke limit. Under the off-resonant condition, we have found the periodic entanglement between the internal and external degrees of freedom of a trapped ion. |
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| Keywords: | standing wave laser trapped ion internal and external degree of freedom periodic entanglement |
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