Atom Michelson Interferometer on a Chip Using a Bose-Einstein Condensate

Ying-Ju Wang, Dana Z. Anderson, Victor M. Bright, Eric A. Cornell, Quentin Diot, Tetsuo Kishimoto, Mara Prentiss, R. A. Saravanan, Stephen R. Segal, and Saijun Wu
Phys. Rev. Lett. 94, 090405 – Published 11 March 2005


An atom Michelson interferometer is implemented on an “atom chip.” The chip uses lithographically patterned conductors and external magnetic fields to produce and guide a Bose-Einstein condensate. Splitting, reflecting, and recombining of condensate atoms are achieved by a standing-wave light field having a wave vector aligned along the atom waveguide. A differential phase shift between the two arms of the interferometer is introduced by either a magnetic-field gradient or with an initial condensate velocity. Interference contrast is still observable at 20% with an atom propagation time of 10 ms.

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  • Received 9 July 2004


©2005 American Physical Society

Authors & Affiliations

Ying-Ju Wang1, Dana Z. Anderson1, Victor M. Bright2, Eric A. Cornell1, Quentin Diot1, Tetsuo Kishimoto1,*, Mara Prentiss3, R. A. Saravanan2, Stephen R. Segal1, and Saijun Wu3

  • 1Department of Physics, University of Colorado, and JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Colorado 80309-0440, USA
  • 2Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309-0427, USA
  • 3Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA

  • *Present address: PRESTO, Japan Science and Technology Agency (JST), and Department of Applied Physics, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan.

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Vol. 94, Iss. 9 — 11 March 2005

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