An Empirical Formula for the Measurement of Spatial Coherence of Trapped Bose Gases

周小计; 陈帅; 王义遒; 陈徐宗; 张建玮

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An Empirical Formula for the Measurement of Spatial Coherence of Trapped Bose Gases

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An empirical formula,which demonstrates the interference fringe visibility as a function of the slit separation and the temperature of thermal atoms,is obtained by analysing a recent experiment[Bloch et al.Nature 403(2000)166]that refers to the spatial correlation function of a trapped Bose gas below the critical temperature.We find that the decay rate of the coherence function for the non-condensed component is of about two orders larger than that of the pure condensed component.The changes of the interference fringe visibility versus the falling time for different temperatures and slit separations are also discussed.

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《中国物理快报：英文版》 |2001年第4期|479-481|共3页
作者
周小计; 陈帅; 王义遒; 陈徐宗; 张建玮;
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作者单位

Department of Electronics;

Peking University;

Beijing 100871;

Department of Physics;

Peking University;

Beijing 100871;

Department of Technical Physics;

Peking University;

Beijing 100871;

Key Laboratory for Quantum Information and Measurements;

Education Ministry of China;

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原文格式 PDF
正文语种 chi
中图分类数学分析;
关键词
temperature.; condensed; separation;

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An Empirical Formula for the Measurement of Spatial Coherence of Trapped Bose Gases

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