Cryogenic Rydberg Optical Tweezer Array

Scalable ultracold Rydberg atom arrays provide an intriguing platform for programmable quantum simulation and computation. We present a new design for a 2D Rydberg qubit array embedded in a low-vibration cryostat. Cryopumping will improve the atom vacuum lifetime to fully leverage the scalability of Rydberg platforms, and a 30 K environment will extend the Rydberg lifetime to its natural linewidth. To create a large and controlled array, we will utilize a 2D optical lattice with the site-resolved addressability and interaction control aided by optical tweezers. To address the effect of motion of Rydberg atoms, we will harness a bi-chromatic magic lattice to provide identical confinement for both ground and Rydberg states, which, together with single photon Rydberg excitation scheme, reduces the phase error in a classic two qubit gate operation. A lossless spin-selective imaging protocol will be explored to maximally exploit the long trap lifetime of the atom array.