title: Highly efficient state-selective submicrosecond photoionization detection of single atoms.
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.
authors.affiliation: Fakultät für Physik, Ludwig-Maximilians-Universität München, D-80799 München, Germany. florian.henkel@physik.uni-muenchen.de
authors.forename: F
authors.initials: F
authors.lastname: Henkel
authors.forename: M
authors.initials: M
authors.lastname: Krug
authors.forename: J
authors.initials: J
authors.lastname: Hofmann
authors.forename: W
authors.initials: W
authors.lastname: Rosenfeld
authors.forename: M
authors.initials: M
authors.lastname: Weber
authors.forename: H
authors.initials: H
authors.lastname: Weinfurter