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Matter-wave interferometry in periodic and quasi-periodic arrays

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arxiv cond-mat/0404458 v1 pith:UUEER7P3 submitted 2004-04-20 cond-mat.soft

Matter-wave interferometry in periodic and quasi-periodic arrays

Y. Eksioglu , P. Vignolo , M.P. Tosi (SNS , Pisa) This is my paper
classification cond-mat.soft
keywords arrayscondensatematter-waveatomsbeambose-einsteinbose-hubbardcalculate
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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