Spin dynamics dominated by superexchange via virtual molecules
Atomic Physics
2025-07-29 v1 Quantum Gases
Quantum Physics
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.
Keywords
Cite
@article{arxiv.2208.06054,
title = {Spin dynamics dominated by superexchange via virtual molecules},
author = {Yoo Kyung Lee and Hanzhen Lin and Wolfgang Ketterle},
journal= {arXiv preprint arXiv:2208.06054},
year = {2025}
}