Creation of gap solitons in Bose-Einstein condensates

Details Creation of gap solitons in Bose-Einstein condensates Creation of gap solitons in Bose-Einstein condensates

1998-05-20

arxiv.org/abs/cond-mat/9805228v1

Physics

Condensed Matter

6 pages, 3 figures

Scientific paper

10.1103/PhysRevA.59.643

We discuss a method to launch gap soliton-like structures in atomic Bose-Einstein condensates confined in optical traps. Bright vector solitons consisting of a superposition of two hyperfine Zeeman sublevels can be created for both attractive and repulsive interactions between the atoms. Their formation relies on the dynamics of the atomic internal ground states in two far-off resonant counterpropagating sigma^+ sigma^- polarized laser beams which form the optical trap. Numerical simulations show that these solitons can be prepared from a one-component state provided with an initial velocity.

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