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arXiv · 1008.1910

Highly-efficient state-selective sub-microsecond photoionization detection of single atoms

Florian Henkel·Michael Krug·Julian Hofmann·Wenjamin Rosenfeld·Markus Weber·Harald Weinfurter
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Abstract

We experimentally demonstrate a detection scheme suitable for state analysis of single optically trapped atoms in less than 1 μs with an overall detection efficiency η exceeding 98%. The method is based on hyperfine-state-selective photoionization and subsequent registration of the correlated photoion-electron pairs by coincidence counting via two opposing channel electron multipliers. The scheme enables the calibration of absolute detection efficiencies and might be a key ingredient for future quantum information applications or precision spectroscopy of ultracold atoms.

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Florian Henkel, Michael Krug, Julian Hofmann, Wenjamin Rosenfeld, Markus Weber, Harald Weinfurter. 2010-12-22. Highly-efficient state-selective sub-microsecond photoionization detection of single atoms. https://doi.org/10.1103/physrevlett.105.253001

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