Microscopy of Ultracold Molecules

Recent years have seen rapid progress in creating and studying ultracold gases of polar molecules. These molecules are attractive candidates for quantum simulation of many-body systems, such as the XXZ model of quantum magnetism, due to their long-range anisotropic interactions and rich internal structure. We are constructing a new apparatus to perform site-resolved quantum gas microscopy on strongly-interacting dipolar 23Na87Rb molecules confined within a 2D optical lattice. We will form the molecules by coherently assembling cold sodium and rubidium atoms from atomic Bose condensates. Our experiment features in-vacuum electrodes to tune the interactions between the molecules as well as a high-resolution objective for imaging. We plan to perform quantum gas microscopy by dissociating the molecules in a way sensitive to their rotational state, laser cooling the constituent atomic species, and detecting the scattered photons.

Schematic of the ultracold molecule microscope. Polar ground state molecules (NaRb) are trapped in a 2D array. A microscope objective is able to resolve individual sites of the array and read out the quantum state of the molecules.
Vacuum chamber for the ultracold molecule microscope.
Cut through the UHV science chamber showing in-vacuum electrodes, electrical feedthroughs, objective and coils.