In-situ equalization of single-atom loading in large-scale optical tweezers arrays
Abstract
We report on the realization of large assembled arrays of more than 300 single 87Rb atoms trapped in optical tweezers in a cryogenic environment at 4~K. For arrays with N a=324 atoms, the assembly process results in defect-free arrays in 37\% of the realizations. To achieve this high assembling efficiency, we equalize the loading probability of the traps within the array using a closed-loop optimization of the power of each optical tweezers, based on the analysis of the fluorescence time-traces of atoms loaded in the traps.
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