Confinement-Induced Resonances in Low-Dimensional Quantum Systems

Elmar Haller, Manfred J. Mark, Russell Hart, Johann G. Danzl, Lukas Reichsöllner, Vladimir Melezhik, Peter Schmelcher, and Hanns-Christoph Nägerl
Phys. Rev. Lett. 104, 153203 – Published 14 April 2010

Abstract

We report on the observation of confinement-induced resonances in strongly interacting quantum-gas systems with tunable interactions for one- and two-dimensional geometry. Atom-atom scattering is substantially modified when the s-wave scattering length approaches the length scale associated with the tight transversal confinement, leading to characteristic loss and heating signatures. Upon introducing an anisotropy for the transversal confinement we observe a splitting of the confinement-induced resonance. With increasing anisotropy additional resonances appear. In the limit of a two-dimensional system we find that one resonance persists.

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  • Received 19 February 2010

DOI:https://doi.org/10.1103/PhysRevLett.104.153203

©2010 American Physical Society

Authors & Affiliations

Elmar Haller1, Manfred J. Mark1, Russell Hart1, Johann G. Danzl1, Lukas Reichsöllner1, Vladimir Melezhik2, Peter Schmelcher3, and Hanns-Christoph Nägerl1

  • 1Institut für Experimentalphysik and Zentrum für Quantenphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
  • 2Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, 141980 Dubna, Russia
  • 3Zentrum für Optische Quantentechnologien, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

See Also

Scattering in Mixed Dimensions with Ultracold Gases

G. Lamporesi, J. Catani, G. Barontini, Y. Nishida, M. Inguscio, and F. Minardi
Phys. Rev. Lett. 104, 153202 (2010)

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Vol. 104, Iss. 15 — 16 April 2010

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