Matter-wave interferometry in periodic and quasi-periodic arrays

Details Matter-wave interferometry in periodic and quasi-periodic arrays Matter-wave interferometry in periodic and quasi-periodic arrays

2004-04-20

arxiv.org/abs/cond-mat/0404458v1

Physics

Condensed Matter

Soft Condensed Matter

11 pages, 6 figures. To appear in Opt. Comm

Scientific paper

10.1016/j.optcom.2004.10.036

We calculate within a Bose-Hubbard tight-binding model the matter-wave flow driven by a constant force through a Bose-Einstein condensate of Rb 87 atoms in various types of quasi-onedimensional arrays of potential wells. Interference patterns are obtained when beam splitting is induced by creating energy minigaps either through period doubling or through quasi-periodicity governed by the Fibonacci series. The generation of such condensate modulations by means of optical-laser structures is also discussed.

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