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Opt Express. 2007 Dec 24;15(26):17673-80.

Observation of transverse interference fringes on an atom laser beam.

Author information

  • 1ARC Centre of Excellence for Quantum-Atom Optics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia.

Abstract

Using the unique detection properties offered by metastable helium atoms we have produced high resolution images of the transverse spatial profiles of an atom laser beam. We observe fringes on the beam, resulting from quantum mechanical interference between atoms that start from rest at different transverse locations within the outcoupling surface and end up at a later time with different velocities at the same transverse position. Numerical simulations in the low output-coupling limit give good quantitative agreement with our experimental data.

PMID:
19551063
[PubMed - indexed for MEDLINE]

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