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arXiv 1109.5340physics.atom-ph
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用于在电介质表面附近产生超冷原子气体的磁传输装置

Magnetic transport apparatus for the production of ultracold atomic gases in the vicinity of a dielectric surface

S. Haendel, A. L. Marchant, T. P. Wiles, S. A. Hopkins, S. L. Cornish

备注：
11 pages, 11 figures
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摘要：

我们提出了一个装置，设计用于研究原子与表面的相互作用，使用量子简并气体的$^{85}$ Rb和$^{87}$ Rb在室温电介质表面附近。待研究的表面是安装在超高真空（UHV）下的玻璃池中的玻璃Dove棱镜的超抛光面。为了保持对表面周围区域的良好的光学访问，磁输运被用于从容纳磁光阱（MOT）的单独真空室递送超冷原子。我们提出了一个详细的描述真空装置突出的新颖的设计特点，一个低姿态的MOT室和包括在运输path.We报告的障碍物周围的磁运输的表征和优化，实现运输效率的70%，可以忽略不计的加热。最后，我们展示了加载的混合光磁阱与$^{87}$ Rb和创建玻色-爱因斯坦凝聚体通过强制蒸发冷却接近的电介质表面。

英文摘要：

We present an apparatus designed for studies of atom-surface interactions using quantum degenerate gases of $^{85}$Rb and $^{87}$Rb in the vicinity of a room temperature dielectric surface. The surface to be investigated is a super-polished face of a glass Dove prism mounted in a glass cell under ultra-high vacuum (UHV). To maintain excellent optical access to the region surrounding the surface magnetic transport is used to deliver ultracold atoms from a separate vacuum chamber housing the magneto-optical trap (MOT). We present a detailed description of the vacuum apparatus highlighting the novel design features; a low profile MOT chamber and the inclusion of an obstacle in the transport path. We report the characterization and optimization of the magnetic transport around the obstacle, achieving transport efficiencies of 70% with negligible heating. Finally we demonstrate the loading of a hybrid optical-magnetic trap with $^{87}$Rb and the creation of Bose-Einstein condensates via forced evaporative cooling close to the dielectric surface.

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