| QUIC阱中紧束缚状态下87Rb原子气体的玻色-爱因斯坦凝聚体相变的直接观测 |
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| 引用本文： | 徐震,周蜀渝,屈求智,刘华,周善钰,王育竹.QUIC阱中紧束缚状态下87Rb原子气体的玻色-爱因斯坦凝聚体相变的直接观测[J].物理学报,2006,55(11):5643-5647. |
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| 作者姓名： | 徐震 周蜀渝 屈求智 刘华 周善钰 王育竹 |
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| 作者单位： | 中国科学院上海光学精密机械研究所，量子光学重点实验室，上海 201800 |
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| 基金项目： | 国家自然科学基金;国家重点基础研究发展计划(973计划) |
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| 摘 要： | 在QUIC阱中经蒸发冷却获得了2×105个|F=2,mF=2〉态的87Rb原子气体的玻色-爱因斯坦凝聚.验证了紧束缚状态下原子云的轴向尺寸的变化作为BEC相变的判据，观察了从热原子气体到玻色-爱因斯坦凝聚的相变过程，测量了自由膨胀过程中BEC的纵横比变化，并和理论预言进行了对比.
关键词：
玻色-爱因斯坦凝聚
激光冷却与囚禁
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| 关 键 词： | 玻色-爱因斯坦凝聚 激光冷却与囚禁 |
| 文章编号： | 1000-3290/2006/55(11)/5643-05 |
| 收稿时间： | 03 17 2006 12:00AM |
| 修稿时间： | 2006-03-172006-04-27 |
Direct observation of Bose-Einstein condensation transition in 87Rb atomic gases in tightly confinement QUIC trap |
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| Xu Zhen,Zhou Shu-Yu,Qu Qiu-Zhi,Liu Hua,Zhou Shan-Yu,Wang Yu-Zhu.Direct observation of Bose-Einstein condensation transition in 87Rb atomic gases in tightly confinement QUIC trap[J].Acta Physica Sinica,2006,55(11):5643-5647. |
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| Authors: | Xu Zhen Zhou Shu-Yu Qu Qiu-Zhi Liu Hua Zhou Shan-Yu Wang Yu-Zhu |
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| Abstract: | By evaporative cooling in QUIC trap, Bose-Einstein condensate (BEC) was achieved with 2×105 87Rb atoms in |F=2, mF=2〉 state. We have demonstrated the criterion of BEC transition by the variation of the axial size of the atoms in tight confinement, and observed phase transition from thermal atomic gases to Bose-Einstein condensate, and measured the shift of aspect ratio of BEC during free expansion, which compared with theoretical prediction. |
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| Keywords: | Bose-Einstein condensate laser cooling and trapping |
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