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We show that with a purely blue-detuned cooling mechanism we can densely loadsingle neutral atoms into large arrays of shallow optical tweezers. With thisability, more efficient assembly of larger ordered arrays will be possible -hence expanding the number of particles available for bottom-up quantumsimulation and computation with atoms. Using Lambda-enhanced grey molasses onthe D1 line of 87Rb, we achieve loading into a single 0.63 mK trap with 89%probability, and we further extend this loading to 100 atoms at 80%probability. The loading behavior agrees with a model of consecutivelight-assisted collisions in repulsive molecular states. With simplerearrangement that only moves rows and columns of a 2D array, we demonstrateone example of the power of enhanced loading in large arrays.

Grey-molasses optical-tweezer loading: Controlling collisions for scaling atom-array assembly