High Resolution Imaging of Single Atoms in a Quantum Gas

Details High Resolution Imaging of Single Atoms in a Quantum Gas High Resolution Imaging of Single Atoms in a Quantum Gas

2008-04-30

arxiv.org/abs/0804.4788v1

Physics

Condensed Matter

Other Condensed Matter

5 pages, 5 figures

Scientific paper

Our knowledge on 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 micrometer 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. Imaging a Bose-Einstein condensate in a one-dimensional optical lattice with 600 nm period we demonstrate single site addressability in a sub-um optical lattice. The technique offers exciting possibilities for the preparation, manipulation and analysis of quantum gases.

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