Observation of confinement-induced resonances in a 3D lattice
ORAL
Abstract
We report on the observation of confinement-induced resonances (CIRs) for strong zero-dimensional (0D) confinement in a three-dimensional (3D) optical lattice potential. Starting from a Mott-insulator state with mainly single-site occupancy, we detect loss and heating features at specific values for the confinement length scale and the 3D scattering length, in isotropic and anisotropic lattice potentials. Two independent models, describing the coupling between the center-of-mass and the relative motion of the particles as mediated by the lattice, predict the resonance positions to a good approximation, suggesting a universal behavior. Our results show that CIRs exist for any dimensionality and open up a new method for interaction tuning and controlled molecule formation under strong 0D confinement.
*Supported by the Austrian Science Fund FWF within the DFG-FWF Forschergruppe FOR2247 under the FWF project number I4343-N36, the Spezialforschungsbereich (SFB) FoQus under project P06, the Wittgenstein prize grant under project number Z336-N36.Supported by the Spanish Ministerio de Ciencia, Innovación y Universidades under project PGC2018-093854-B-I00, and the project GeoCoSiM, sponsored by the Plurianual Program between the UPM and the Comunidad de Madrid.
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Publication: D. Capecchi, C. Cantillano, M. J. Mark, F. Meinert, A. Schindewolf, M. Landini, A. Saenz, F. Revuelta and H.-C. Nägerl (2021). 'Observation of confinement-induced resonances in a 3D lattice', in preparation.
Presenters
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Deborah Capecchi
- Univ of Innsbruck