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APS » Journals » Phys. Rev. Lett. » Volume 94 » Issue 9
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Phys. Rev. Lett. 94, 090405 (2005) [4 pages]

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

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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

Received 9 July 2004; 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.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.090405
DOI:
10.1103/PhysRevLett.94.090405
PACS:
03.75.Dg, 32.80.–t, 39.20.+q

*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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