Directional squeezed atomic matter waves via superradiant dissociation of molecular Bose-Einstein condensates

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  • 31 January 2002
Abstract
We propose a scheme for generating directional number-squeezed atomic matter-waves via photodissociation of molecular Bose-Einstein condensates (BECs). This scheme relies on spontaneous directionality associated with cigar-shaped condensates as recently observed in the phenomena of BEC superradiance. The physics of atom-pair emission, however, is significantly different from atom-photon emission, hence we develop a non-Markovian model to describe this new physical regime. Our model also applies to a recently proposed scheme for generating EPR states via superradiant spin-mixing collisions in an atomic condensate. We find that while directionality is achievable with atom-atom pairs, the threshold conditions and dependence of emission angle on the pumping rate are much less favorable than previously predicted.

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