To detect the looped Bloch bands of Bose-Einstein condensates in optical lattices

Details To detect the looped Bloch bands of Bose-Einstein condensates in optical lattices To detect the looped Bloch bands of Bose-Einstein condensates in optical lattices

2003-07-02

arxiv.org/abs/cond-mat/0307066v1

Physics

Condensed Matter

5 pages, 4 figures, Submitted to Physics Letters A

Scientific paper

A loop structure was predicted to exist in the Bloch bands of Bose-Einstein condensates in optical lattices recently in [{\it Wu and Niu, Phys. Rev. A {\bf 61}, 023402 (2000)}]. We discuss how to detect experimentally the looped band with an accelerating optical lattice through extensive and realistic numerical simulations. We find that the loop can be detected through observing either nonlinear Landau-Zener tunneling or destruction of Bloch oscillations.

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