Many-Body Spin Physics and Molecular Collisions in CaF Tweezer Arrays

In this poster, we report results on many-bodyspin models and molecular collisions using laser-cooled CaF molecules in optical tweezers. For our many-body spin physics investigations, we realize dipolar XXZ and XYZ models using Floquet engineering of the native electric dipolar interactions. We investigate non-equilibrium magnon dynamics in mesoscopic 1D chains, revealing phenomena such as quantum walks, magnon bound states, and coherent creation and annihilation of spin pairs. Using the same spin models, we generate spin-squeezed states in molecules and demonstrate metrological gain. Additionally, to reach larger systems and geometries in 2D, we report a new tweezer loading scheme that provides nearly an order of magnitude more molecules. Lastly, we present preliminary observations of collisional shielding via van der Waals repulsion, achieving two-body inelastic loss rates that are over two orders of magnitude below universal loss.