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Frontiers in Optics

Bose-Einstein Condensate in a Box

Chih‐Sung Chuu, J. L. Hanssen, Todd P. Meyrath, Gabriel Price, Florian Schreck, Mark G. Raizen

Published Jan 1, 2005• 14 citations
Publisher

Abstract

One-dimensional Bose-Einstein condensates have been produced in an optical box trap. Integrated with single atom detection capability, the box trap paves the way for studies of quantum atom statistics.
DOI
10.1364/ls.2005.ltub4

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We present numerical studies of Bose-Einstein condensates in an optical box trap. The box trap is modeled by using Gaussian-wall or hard-wall trapping potentials along the boundary of the box to mimic a recent experimental setup. In order to study a quasi-one-dimensional system, the Gaussian walls are separated differently along the axial and radial directions. Furthermore, the two-body interaction is described by a hard-sphere potential, whose radius equals the sss-wave scattering length. Using a finite-temperature path integral Monte Carlo method, we have calculated the density profiles of the system as a function of the temperature, the strength of the two-body interaction, and the number of particles. Our numerical results show clearly the Tonks-gas--like behavior in the strong interaction limit. In addition, we have compared our numerical data with the experimental data and theoretical results, and found that our simulation data agree with them quantitatively.