Confinement-Induced Resonances in Low-Dimensional Quantum Systems

Details Confinement-Induced Resonances in Low-Dimensional Quantum Systems Confinement-Induced Resonances in Low-Dimensional Quantum Systems

2010-02-19

arxiv.org/abs/1002.3795v2

Phys. Rev. Lett. 104, 153203 (2010)

Physics

Condensed Matter

Quantum Gases

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.104.153203

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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