dorsal/arxiv
View SchemaTransverse excitations of ultracold matter waves upon propagation past abrupt waveguide changes
| Authors | M. Koehler, M. W. J. Bromley, B. D. Esry |
|---|---|
| Categories | |
| ArXiv ID | physics/0411176 |
| URL | https://arxiv.org/abs/physics/0411176 |
| DOI | 10.1103/PhysRevA.72.023603 |
| Journal | Phys.Rev.A 72 023603 (2005) |
Abstract
The 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.
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"abstract": "The propagation of ultracold atomic gases through abruptly changing waveguide\npotentials is examined in the limit of non-interacting atoms. Time-independent\nscattering calculations of microstructured waveguides with discontinuous\nchanges in the transverse harmonic binding potentials are used to mimic\nwaveguide perturbations and imperfections. Three basic configurations are\nexamined: step-like, barrier-like and well-like with waves incident in the\nground mode. At low energies, the spectra rapidly depart from single-moded,\nwith significant transmission and reflection of excited modes. The high-energy\nlimit sees 100 percent transmission, with the distribution of the transmitted\nmodes determined simply by the overlap of the mode wave functions and\ninterference.",
"arxiv_id": "physics/0411176",
"authors": [
"M. Koehler",
"M. W. J. Bromley",
"B. D. Esry"
],
"categories": [
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.72.023603",
"journal_ref": "Phys.Rev.A 72 023603 (2005)",
"title": "Transverse excitations of ultracold matter waves upon propagation past abrupt waveguide changes",
"url": "https://arxiv.org/abs/physics/0411176"
},
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