Transverse excitations of ultracold matter waves upon propagation past abrupt waveguide changes

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dc.creatorKoehler, M.
dc.creatorBromley, M. W. J.
dc.creatorEsry, B. D.
dc.date2004-11-19
dc.date.accessioned2026-07-07T06:24:37Z
dc.date.available2026-07-07T06:24:37Z
dc.descriptionThe propagation of ultracold atomic gases through abruptly changing waveguide potentials is examined in the limit of non-interacting atoms. Time-independent scattering calculations of microstructured waveguides with discontinuous changes in the transverse harmonic binding potentials are used to mimic waveguide perturbations and imperfections. Three basic configurations are examined: step-like, barrier-like and well-like with waves incident in the ground mode. At low energies, the spectra rapidly depart from single-moded, with significant transmission and reflection of excited modes. The high-energy limit sees 100 percent transmission, with the distribution of the transmitted modes determined simply by the overlap of the mode wave functions and interference.
dc.description20 pages, 7 figures, under review PRA
dc.identifierhttps://arxiv.org/abs/physics/0411176
dc.identifierhttp://arxiv.org/abs/physics/0411176
dc.identifierPhys.Rev.A 72 023603 (2005)
dc.identifierdoi:10.1103/PhysRevA.72.023603
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/96604
dc.subjectAtomic Physics
dc.titleTransverse excitations of ultracold matter waves upon propagation past abrupt waveguide changes
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