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

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

2010-08-11

arxiv.org/abs/1008.1910v4

Phys. Rev. Lett. 105, 253001 (2010)

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.105.253001

We experimentally demonstrate a detection scheme suitable for state analysis of single optically trapped atoms in less than 1 {\mu}s with an overall detection efficiency {\eta} 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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