Matter-wave interferometry in periodic and quasi-periodic arrays
arXiv:cond-mat/0404458 · doi:10.1016/j.optcom.2004.10.036
Abstract
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.
arXiv comment11 pages, 6 figures. To appear in Opt. Comm
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