Towards Rearrangeable Tweezer Arrays of Laser-Cooled CaF Molecules

Programmable arrays of polar molecules could be a powerful new platform to simulate lattice spin Hamiltonians and to explore quantum information processing with molecular qubits. In particular, rearrangeable optical tweezer arrays of laser-cooled molecules offer high detection fidelities and local control. In this poster, we present our recent progress towards realizing a rearrangeable optical tweezer array of laser-cooled CaF molecules. We describe several new techniques, including dynamical optical trap compression to enhance molecular densities, a method to characterize our high-resolution imaging system in-situ, and an imaging technique that offers nearly background-free detection with high fidelity. We also report on loading of single molecules into large 1D arrays and coherent rotational state control.