| Coherent Scattering of Light by Bose-Einstein Condensation in a Tight Confinement |
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| 作者姓名： | 屈求智 周蜀渝 龙全 徐震 刘亮 王育竹 |
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| 作者单位： | Key Laboratory of Quantum optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10334050, and the National Basic Research Programme of China under Grant No 2006CB921202. We thank to Jun Liao and Haixiang Fu for helpful discussion. We also thank Shanyu Zhou, Hua Liu, Darning Xu and Haibing Wu for their technical sup- port. |
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| 摘 要： | We have observed strong scattering of a probe light by dilute Bose-Einstein condensate （BEC） ^87Rb gas in a tight magnetic trap. The scattering light forms fringes at the image plane. It is found that we can infer the real size of the condensation and the number of the atoms by modelling the imaging system. We present a quantitative calculation of light scattering by the condensed atoms. The calculation shows that the experimental results agree well with the prediction of the generalized diffraction theory, and thus we can directly observe the phase transition of BEC in a tight trap.
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| 关 键 词： | 光散射 Bose-Einstein凝结 光探针 原子 |
| 收稿时间： | 2007-05-28 |
Coherent Scattering of Light by Bose--Einstein Condensation in a Tight Confinement |
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| QU Qiu-Zhi,ZHOU Shu-Yu,LONG Quan,XU Zhen,LIU Liang,WANG Yu-Zhu.Coherent Scattering of Light by Bose-Einstein Condensation in a Tight Confinement[J].Chinese Physics Letters,2007,24(12):3396-3399. |
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| Authors: | QU Qiu-Zhi ZHOU Shu-Yu LONG Quan XU Zhen LIU Liang WANG Yu-Zhu |
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| Institution: | Key Laboratory of Quantum optics, Shanghai Institute of Optics and Fine Mechanics, hinese Academy of Sciences, Shanghai 201800 |
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| Abstract: | We have observed strong scattering of probe light by dilute Bose--Einstein condensate (BEC) 87Rb gas in a tight magnetic trap. The scattering light forms fringes at the image plane. It is found that we can infer the real size of thecondensation and the number of the atoms by modelling the imaging system. We present a quantitative calculation of light scattering by the condensed atoms. The calculation shows that the experimental results agree well with the prediction of the generalized diffraction theory, and thus we can directly observe the phase transition of BEC in a tight trap. |
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| Keywords: | 32 80 Pj 05 30 Jp |
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