Coherent control and single-shot readout of a rare-earth ion embedded in a nanophotonic cavity

Quantum networks based on optically addressable spin qubits promise to enable secure communication, distributed quantum computing, and tests of fundamental physics. Scaling up quantum networks based on solid-state luminescent centers requires coherent spin and optical transitions coupled to photonic resonators. Here we investigate single \mathrm{{}^{171}Yb^{3+}}ions in yttrium orthovanadate coupled to a nanophotonic cavity. These ions possess...