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arXiv · 2209.12504

Observation of confinement-induced resonances in a 3D lattice

Deborah Capecchi·Camilo Cantillano·Manfred J. Mark·Florian Meinert·Andreas Schindewolf·Manuele Landini·Alejandro Saenz·Fabio Revuelta·Hanns-Christoph Nägerl
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Abstract

We report on the observation of confinement-induced resonances for strong three-dimensional (3D) confinement in a lattice potential. Starting from a Mott-insulator state with predominantly single-site occupancy, we detect loss and heating features at specific values for the confinement length and the 3D scattering length. Two independent models, based on 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 extend confinement-induced resonances to any dimensionality and open up an alternative method for interaction tuning and controlled molecule formation under strong 3D confinement.

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Deborah Capecchi, Camilo Cantillano, Manfred J. Mark, Florian Meinert, Andreas Schindewolf, Manuele Landini, Alejandro Saenz, Fabio Revuelta, Hanns-Christoph Nägerl. 2022-09-26. Observation of confinement-induced resonances in a 3D lattice. https://doi.org/10.1103/physrevlett.131.213002

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