High-resolution scanning electron microscopy of an ultracold quantum gas
High-resolution scanning electron microscopy of an ultracold quantum gas
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DOI：
10.1038/nphys1102
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发表时间：
2008-12-01
期刊：
影响因子：
19.6
通讯作者：
Ott, Herwig
中科院分区：
文献类型：
--
作者：
Gericke, Tatjana;Wuertz, Peter;Ott, Herwig
我们对超冷量子气体的认识受到我们探测这些物体的能力的强烈影响。结合单原子灵敏度的原位成像是一个特别吸引人的方案，因为它可以提供有关这些系统的结构和相关性的直接信息。为了精确表征，高空间分辨率是强制性的。特别是，研究光学晶格中的量子气体的观点使得分辨率远低于1微米非常理想。在这里，我们报告了一种新的显微镜技术，它是基于扫描电子显微镜，并允许检测量子气体内的单个原子的空间分辨率优于150 nm。我们记录了这种技术的伟大功能，通过精确的密度测量的一个被困的玻色-爱因斯坦凝聚和第一次实验演示的单网站addressability在亚微米光学晶格。
Our knowledge of ultracold quantum gases is strongly influenced by our ability to probe these objects. In situ imaging combined with single-atom sensitivity is an especially appealing scenario, as it can provide direct information on the structure and the correlations of such systems. For a precise characterization a high spatial resolution is mandatory. In particular, the perspective to study quantum gases in optical lattices makes a resolution well below one micrometre highly desirable. Here, we report on a novel microscopy technique, which is based on scanning electron microscopy and allows for the detection of single atoms inside a quantum gas with a spatial resolution of better than 150 nm. We document the great functionality of this technique by precise density measurements of a trapped Bose-Einstein condensate and the first experimental demonstration of single-site addressability in a submicrometre optical lattice.