Spin dynamics dominated by superexchange via virtual molecules

• URL: http://arxiv.org/abs/2208.06054v1
• Date: Thu, 11 Aug 2022 22:16:54 GMT
• Title: Spin dynamics dominated by superexchange via virtual molecules
• Authors: Yoo Kyung Lee, Hanzhen Lin, Wolfgang Ketterle
• Abstract summary: The Bose-Hubbard model 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.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• 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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