Loading and Imaging Atom Arrays via Electromagnetically Induced Transparency

Arrays of neutral atoms present a promising system for quantum computing, quantum sensors, and other applications, several of which would profit from the ability to load, cool, and image the atoms in a finite magnetic field. In this work, we develop a technique to image and prepare 87 Rb atom arrays in a finite magnetic field by combining electromagnetically induced transparency cooling with fluorescence imaging. We achieve an average readout fidelity of 99.7 ( 1 ) % at 98.2 ( 3 ) % survival probability and up to 68 ( 2 ) % single-atom stochastic loading probability in a 2.3 G magnetic field, with performance validated at fields up to 10 G. We further develop a model to predict the survival probability, which also agrees well with several other atom-array experiments. Our technique cools both the axial and radial directions, and will enable future continuously operated neutral-atom quantum processors and quantum sensors.