Towrads Rydberg tweezer arrays in a low-temperature blackbody radiation environment

Rydberg atom tweezer arrays have emerged as a powerful quantum simulation and computation platform. We present the design of an apparatus for studying Rydberg atom arrays in a cryogenic environment, with a focus on lowering the blackbody radiation temperature. We describe the design of a 4K low-vibration closed-cycle cryostat. We also report on progress towards extending the vacuum lifetime of the atoms by cryopumping and extending the Rydberg state lifetime by suppressing blackbody-induced transitions, a fundamental source of gate errors in this platform. Combined with single-photon excitation using a high power UV laser, our scheme could potentially lead to higher-fidelity entangling gates. Moreover, the suppression of blackbody radiation by two orders of magnitude could lead to dramatically extended lifetimes in Rydberg dressing schemes limited by collective loss and for qubits encoded in circular Rydberg states.