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Multibeam atom laser: Coherent atom beam splitting from a single far-detuned laser

J. Dugué, G. Dennis, M. Jeppesen, M. T. Johnsson, C. Figl, N. P. Robins, and J. D. Close
Phys. Rev. A 77, 031603(R) – Published 14 March 2008

Abstract

We report the experimental realization of a multibeam atom laser. A single continuous atom laser is outcoupled from a Bose-Einstein condensate via an optical Raman transition. The atom laser is subsequently split into up to five atomic beams with slightly different momenta, resulting in multiple, nearly copropagating, coherent beams which could be of use in interferometric experiments. The splitting process itself is a realization of Bragg diffraction, driven by each of the optical Raman laser beams independently. This presents a significantly simpler implementation of an atomic beam splitter, one of the main elements of coherent atom optics.

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  • Received 7 September 2007

DOI:https://doi.org/10.1103/PhysRevA.77.031603

©2008 American Physical Society

Authors & Affiliations

J. Dugué1,2, G. Dennis1, M. Jeppesen1, M. T. Johnsson1, C. Figl1,*, N. P. Robins1, and J. D. Close1

  • 1Australian Research Council Centre of Excellence for Quantum-Atom Optics, Department of Physics, The Australian National University, Canberra, ACT 0200, Australia
  • 2Laboratoire Kastler Brossel, ENS, UPMC-Paris 6, CNRS, 24 Rue Lhomond, 75231 Paris Cedex 05, France

  • *cristina.figl@anu.edu.au; URL: http://www.acqao.org

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Vol. 77, Iss. 3 — March 2008

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