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arXiv 1002.2616physics.atom-phcond-mat.quant-gasquant-ph
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磁光阱中双电子原子温度的快速无损测量

Fast Non-destructive temperature measurement of two-electrons atoms in a magneto-optical trap

Matteo Cristiani, Tristan Valenzuela, Hannes Gothe, Jürgen Eschner

摘要:

我们扩展了Honda等人最初提出的方法al.to测量了磁光阱(MOT)中镱和碱土原子的温度。该方法是基于通过探测1 S 0-> 3 P1互组合线获得的激发光谱的分析。由于仔细的分析和建模的MOT光对探针过渡所造成的影响,我们克服了以前的作品中遇到的分辨率和精度限制。测量了基态光移和拉比展宽,并与计算值进行了比较。这一知识使我们能够正确地提取多普勒贡献的线宽,从而获得可靠的测量云的温度。最后,我们展示了如何自由落体原子光谱提供了一种替代方法来确定样品的温度,这类似于标准的飞行时间技术。

英文摘要:

We extend the technique originally proposed by Honda et al.to measure the temperature of Ytterbium and alkine-earth atoms confined in a Magneto-Optical Trap (MOT). The method is based on the analysis of excitation spectra obtained by probing the 1S0->3P1 inter-combination line. Thanks to a careful analysis and modeling of the effects caused by the MOT light on the probe transition we overcome the resolution and precision limits encountered in previous works. Ground state light shift and Rabi broadening are measured and successfully compared with calculated values. This knowledge allows us to properly extract the Doppler contribution to the linewidth, thus obtaining a reliable measurement of the cloud temperature. We finally show how spectroscopy on free-falling atoms provides an alternative method to determine the sample temperature which resembles the standard time-of-flight technique.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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