Atom counting in ultracold gases using photoionization and ion detection

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T. Campey, C. J. Vale, M. J. Davis, N. R. Heckenberg, and H. Rubinsztein-Dunlop
School of Physical Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia

S. Kraft, C. Zimmermann, and J. Fortágh
Physikalisches Institut der Universität Tübingen, 72076 Tübingen, Germany

Received 6 July 2006; published 18 October 2006

Weanalyze photoionization and ion detection as a means of accuratelycounting ultracold atoms. We show that it is possible tocount clouds containing many thousands of atoms with accuracies betterthan N^–1/2 with current technology. This allows the direct probingof sub-Poissonian number statistics of atomic samples. The scheme canalso be used for efficient single-atom detection with high spatiotemporalresolution. All aspects of a realistic detection scheme are considered,and we discuss experimental situations in which such a schemecould be implemented.

URL:	http://link.aps.org/doi/10.1103/PhysRevA.74.043612
DOI:	10.1103/PhysRevA.74.043612
PACS:	03.75.Be; 32.80.Fb; 39.90.+d 03.75.Be Atom and neutron optics 32.80.Fb Photoionization of atoms and ions 39.90.+d Other instrumentation and techniques for atomic and molecular physics (restricted to new topics in section 39) YEAR: 2006
KEYWORDS:	photoionisation, atom-photon collisions, statistics

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