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

机译:用于在电介质表面附近产生超冷原子气体的磁传输设备

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摘要

We present an apparatus designed for studies of atom-surface interactions using quantum degenerate gases of 85Rb and 87Rb 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. 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 87Rb and the creation of Bose-Einstein condensates via forced evaporative cooling close to the dielectric surface.
机译:我们提出了一种用于研究原子-表面相互作用的装置,该装置在室温电介质表面附近使用85Rb和87Rb的量子简并气体进行研究。要研究的表面是在超高真空下安装在玻璃单元中的玻璃道威棱镜的超抛光面。为了保持对表面周围区域的出色光学访问,磁性传输用于从容纳磁光阱(MOT)的单独真空腔中传递超冷原子。我们将对真空设备进行详细描述,重点介绍新颖的设计功能。低矮的MOT腔室,运输路径中包含障碍物。我们报告了障碍物周围磁传输的特性和优化,在热量可忽略不计的情况下实现了70%的传输效率。最后,我们展示了通过87Rb混合光阱的负载以及通过在电介质表面附近进行强制蒸发冷却而形成的玻色-爱因斯坦凝聚物。

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