Probing spin dynamics from the Mott insulating to the superfluid regime in a dipolar lattice gas
Résumé
We analyze the spin dynamics of an out-of-equilibrium large spin dipolar atomic Bose gas in an
optical lattice. We observe a smooth crossover from a complex oscillatory behavior to an exponen-
tial behavior throughout the Mott to superfluid transition. While both of these regimes are well
described by our theoretical models, we provide data in the intermediate regime where dipolar inter-
actions, contact interactions, and super-exchange mechanisms compete. In this strongly correlated
regime, spin dynamics and transport are coupled, which challenges theoretical models for quantum
magnetism.