The spin and motional degrees of freedom of ultracold atoms along with our ability to manipulate them with electric and magnetic fields form a superb resource for simulation and sensing with quantum mechanical states. In our experiments, we create arrays of single atoms held in optical tweezers and introduce entangling interactions by promoting their outer electrons to high lying, Rydberg orbitals, allowing for tunable electric dipole couplings. I will present our recent progress toward characterizing and harnessing entanglement growth in this system and its eventual application to atom interferometry with entangled matter.