镱原子在固体浸没透镜表面的全光输运和压缩
All-optical transport and compression of ytterbium atoms into the surface of a solid immersion lens
摘要：
提出了一种将174Yb原子加载到固体浸没透镜表面附近的单层光阱中的全光学方法，该方法提高了显微镜系统的数值孔径。利用三个光学偶极阱组成的系统将原子输运到表面以下20 μ m的区域。“光学手风琴”技术用于产生冷凝物并将原子压缩到120 nm的宽度和距离表面1.8 um的距离。此外，我们能够证实，压缩后的冷凝表现为二维量子气体。
英文摘要：
We present an all-optical method to load 174Yb atoms into a single layer of an optical trap near the surface of a solid immersion lens which improves the numerical aperture of a microscope system. Atoms are transported to a region 20 um below the surface using a system comprised by three optical dipole traps. The "optical accordion" technique is used to create a condensate and compress the atoms to a width of 120 nm and a distance of 1.8 um away from the surface. Moreover, we are able to verify that after compression the condensate behaves as a two-dimensional quantum gas.
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