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Originally published in Science Express on 14 June 2001
Science 13 July 2001:
Vol. 293. no. 5528, pp. 278 - 280
DOI: 10.1126/science.1062725
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Reports

Deterministic Delivery of a Single Atom

Stefan Kuhr,* Wolfgang Alt, Dominik Schrader, Martin Müller, Victor Gomer, Dieter Meschede

We report the realization of a deterministic source of single atoms. A standing-wave dipole trap is loaded with one or any desired number of cold cesium atoms from a magneto-optical trap. By controlling the motion of the standing wave, we adiabatically transport the atom with submicrometer precision over macroscopic distances on the order of a centimeter. The displaced atom is observed directly in the dipole trap by fluorescence detection. The trapping field can also be accelerated to eject a single atom into free flight with well-defined velocities.

Institut für Angewandte Physik, Universität Bonn, Wegelerstrasse 8, D-53115 Bonn, Germany.
*   To whom correspondence should be addressed. E-mail: kuhr{at}iap.uni-bonn.de

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