Feshbach spectroscopy of an ultracold mixture of 85 Rb and 133 Cs
Feshbach spectroscopy of an ultracold mixture of 85 Rb and 133 Cs
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DOI：
10.1103/physreva.87.010703
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发表时间：
2012-08
影响因子：
2.9
通讯作者：
Hung-Wen Cho;D. McCarron;Michael P. K¨oppinger;D. L. Jenkin;K. Butler;P. Julienne;Caroline L. Blackley;Ruth Le Sueur;J. Hutson;S. Cornish
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文献类型：
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作者：
Hung-Wen Cho;D. McCarron;Michael P. K¨oppinger;D. L. Jenkin;K. Butler;P. Julienne;Caroline L. Blackley;Ruth Le Sueur;J. Hutson;S. Cornish
我们报告的观察种间Feshbach共振的光学捕获混合物的85 Rb和133 Cs。我们测量9个共振的最低自旋通道的磁场范围从0到700 G，并表明它们是在良好的协议与耦合通道计算。种间背景散射长度在大范围的磁场中接近于零，允许通过种间热化灵敏地检测Feshbach共振。我们的结果证实了Rb-Cs势曲线的质量[Phys.Rev.A85032506（2012）]，并为超冷极性分子的生产提供了有希望的起点。
We report the observation of interspecies Feshbach resonances in an optically trapped mixture of 85Rb and 133Cs. We measure nine resonances in the lowest spin channel for a magnetic field range from 0 to 700 G and show that they are in good agreement with coupled-channel calculations. The interspecies background scattering length is close to zero over a large range of magnetic fields, permitting the sensitive detection of Feshbach resonances through interspecies thermalization. Our results confirm the quality of the Rb-Cs potential curves [ Phys. Rev. A 85 032506 (2012)] and offer promising starting points for the production of ultracold polar molecules.