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arXiv · 2208.06054

Spin dynamics dominated by superexchange via virtual molecules

Yoo Kyung Lee·Hanzhen Lin·Wolfgang Ketterle
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Abstract

Simple, paradigmatic systems are important tools in understanding strongly correlated systems. One such system is the Bose-Hubbard model, which can be realized using atoms in optical lattices with delta-function interactions. We report the first experimental observation of two features of the Bose-Hubbard model: superexchange via virtual molecules in excited bands and off-site contact interactions. Adiabatic sweeps confirm the creation of such molecules, exemplifying a new kind of Feshbach resonance.

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Yoo Kyung Lee, Hanzhen Lin, Wolfgang Ketterle. 2022-08-11. Spin dynamics dominated by superexchange via virtual molecules. https://doi.org/10.1103/physrevlett.131.213001

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