Topological Atom Laser

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We demonstrate how a topological atom laser can be realized by output coupling a trapped vortex state with a Raman scattering process. We find a linearized analytic solution from which a generalized resonance condition for Raman output coupling is developed. Using numerical simulations of a two component Gross-Pitaevskii equation in two and three dimensions the output beam from a trapped central vortex state is analyzed for cases of pulsed and continuous coupling where the vortex core is either transverse or parallel to the direction of propagation. We show how the parameters of the Raman light fields control the spatial phase of the output beam.
7 pages, 5 figures

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Soft Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/20782

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0301554
 http://arxiv.org/abs/cond-mat/0301554

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arXiv