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Submicron Spatial Modulation of an Interatomic Interaction in a Bose-Einstein Condensate

Rekishu Yamazaki, Shintaro Taie, Seiji Sugawa, and Yoshiro Takahashi
Phys. Rev. Lett. 105, 050405 – Published 30 July 2010
Physics logo See Synopsis: Ups and downs in a BEC

Abstract

We demonstrate submicron spatial control of interatomic interactions in a Bose-Einstein condensate of ytterbium (Yb). A pulsed optical standing wave, tuned near an optical Feshbach resonance, varies the s-wave scattering length continuously across the standing wave pattern. The modulated mean-field energy with a spatial period every 278 nm is monitored by a diffraction pattern in a time-of-flight image. We observe a wide scattering length control of up to 250 nm. The demonstrated spatial modulation of the scattering length proves that high resolution control of atomic interactions is possible.

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  • Received 18 May 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.050405

©2010 American Physical Society

Synopsis

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Ups and downs in a BEC

Published 16 August 2010

A pulsed laser modulates the atom-atom interaction in a Bose-Einstein condensate on submicron length scales.

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Authors & Affiliations

Rekishu Yamazaki1,2, Shintaro Taie1, Seiji Sugawa1, and Yoshiro Takahashi1,2

  • 1Graduate School of Science, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan
  • 2JST-CREST, 4-1-8 Honmachi, Kawaguchi, Saitama 331-0012, Japan

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Issue

Vol. 105, Iss. 5 — 30 July 2010

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