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

Koehler, M., Bromley, M. W. J. and Esry, B. D. (2005) Transverse excitations of ultracold matter waves upon propagation past abrupt waveguide changes. Physical Review A, 72 2: . doi:10.1103/PhysRevA.72.023603

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Author Koehler, M.
Bromley, M. W. J.
Esry, B. D.
Title Transverse excitations of ultracold matter waves upon propagation past abrupt waveguide changes
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2005-08-03
Sub-type Article (original research)
DOI 10.1103/PhysRevA.72.023603
Open Access Status File (Publisher version)
Volume 72
Issue 2
Total pages 8
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Abstract The propagation of ultracold atomic gases through abruptly changing waveguide potentials is examined in the limit of noninteracting 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: steplike, barrierlike, 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% transmission, with the distribution of the transmitted modes determined simply by the overlap of the mode wave functions and interference.
Keyword Neutral atoms
Bound-states
Optics
Chips
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Faculty of Science Publications
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