Matter-wave interferometry in periodic and quasi-periodic arrays

[摘要] 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. (C) 2004 Elsevier B.V. All rights reserved.

[发布日期] 2004-12-21

[关键词] Laser applications;Bose-Einstein condensates in periodic potentials