| We are building up an experiment for the spatially resolved detection of single particles in ultracold quantum gases. For this purpose we combine techniques from scanning electron microscopy and from experiments with ultracold atoms. The focussed electron beam is directed onto an optically trapped atomic sample and the ions which are produced by electron impact ionization are detected with an ion detector. This method can overcome two major limitations of standard absorption imaging systems: It is sensitive to single atoms and it provides an unprecedented spatial resolution combined with a large depth of focus. The current state of the experiment is presented. |
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