Strontium atom arrays: toward Rydberg entanglement and optical qubit control*

Recent work on high-fidelity and low-loss imaging of single strontium atoms has opened the door to assembly and readout of defect-free strontium arrays. We present the results of this work, as well as progress toward Rydberg-mediated entanglement. Strontium has several potential advantages for high-fidelity entanglement. One such advantage is its metastable and optically-resolved clock state, which can be used as a high-lying ground state for single-photon Rydberg excitation. We further discuss progress toward an optical qubit realized by coherent driving of the clock transition, and the potential for qubit entanglement via Rydberg dressing.