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Generation of directional, coherent matter beams through dynamical instabilities in Bose-Einstein condensates

Dennis, Graham; Johnsson, Mattias


We present a theoretical analysis of a coupled, two-state Bose-Einstein condensate with nonequal scattering lengths and show that dynamical instabilities can be excited. We demonstrate that these instabilities are exponentially amplified, resulting in highly directional, oppositely propagating, coherent matter beams at specific momenta. To accomplish this we prove that the mean field of our system is periodic and extend the standard Bogoliubov approach to consider a time-dependent, but cyclic,...[Show more]

CollectionsANU Research Publications
Date published: 2010
Type: Journal article
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.82.033615


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