Rectified Momentum Transport for a Kicked Bose-Einstein Condensate

Mark Sadgrove, Munekazu Horikoshi, Tetsuo Sekimura, and Ken’ichi Nakagawa
Phys. Rev. Lett. 99, 043002 – Published 25 July 2007

Abstract

We report the experimental observation of rectified momentum transport for a Bose-Einstein condensate kicked at the Talbot time (quantum resonance) by an optical standing wave. Atoms are initially prepared in a superposition of the 0 and 2kl momentum states using an optical π/2 pulse. By changing the relative phase of the superposed states, a momentum current in either direction along the standing wave may be produced. We offer an interpretation based on matter-wave interference, showing that the observed effect is uniquely quantum.

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  • Received 16 March 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.043002

©2007 American Physical Society

Authors & Affiliations

Mark Sadgrove1,2,*, Munekazu Horikoshi3, Tetsuo Sekimura1, and Ken’ichi Nakagawa1,2

  • 1Institute for Laser Science, The University of Electro Communications, Chofushi, Chofugaoka 1-5-1, Japan
  • 2Japan Science and Technology Agency, Kawaguchi, Saitama, 332-0012, Japan
  • 3The University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656, Japan.

  • *mark@ils.uec.ac.jp

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Issue

Vol. 99, Iss. 4 — 27 July 2007

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