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Phys. Rev. A 65, 021606(R) (2002) [3 pages]

Continuous detection of an atom laser beam

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Michael Köhl1,2,3,*, Theodor W. Hänsch1,2, and Tilman Esslinger1,2,3
1Sektion Physik, Ludwig-Maximilians-Universität, Schellingstrasse 4/III, D-80799 Munich, Germany
2Max-Planck-Institut für Quantenoptik, D-85748 Garching, Germany
3Institute for Quantum Electronics, ETH Zürich, CH-8093 Zürich, Switzerland

Received 4 September 2001; published 10 January 2002

We have demonstrated a detection scheme for atom laser beams that allows for a continuous measurement of the atom density and readout of the data in real time. The atoms in the atom laser beam are transferred locally from the lower to the upper hyperfine ground state of 87Rb by coherent coupling and are subsequently detected by an absorption measurement. The detection does not affect the Bose-Einstein condensate in the magnetic trap or the atom laser beam outside the detection region.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.65.021606
DOI:
10.1103/PhysRevA.65.021606
PACS:
03.75.Fi, 32.80.-t

*Email address: koehl@iqe.phys.ethz.ch

 
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