Rydberg atom arrays in a cryogenic environment

We present an optical tweezer array of 87Rb atoms housed in a cryogenic environment that successfully combines a 4 K cryopumping surface, a <50 K cold box surrounding the atoms, and a room-temperature high-numerical-aperture objective lens. We have measured a 3000 s atom trap lifetime, sufficiently long to measure and optimize losses due to imaging and cooling at the 10^-4 level. Minimizing these losses is important for achieving large defect-free arrays through rearrangement. We have implemented two-photon coherent control of Rydberg states, with the local electric field tuned to zero through integrated electrodes on an ordered 2D array. We will report our progress towards measuring suppressed avalanche loss effects in Rydberg-dressed atom arrays. This low-vibration, high-optical access cryogenic platform can be used with a wide range of optically trapped atomic or molecular species for applications in quantum computing, simulation, and metrology.