Nondestructive readout of nuclear spin qubits in a ¹⁷¹Yb atom array

Neutral atom arrays have seen increasing attention and development as a platform for quantum information science; the I = 1/2 nuclear spin in ¹⁷¹Yb is emerging as a promising system in which to implement quantum information processing. With an array of atoms in tweezers at the magic trapping wavelength for the optical clock transition, we demonstrate consecutive, nondestructive readouts of the nuclear spin states and present Rabi oscillations with second-scale decay rates. We also present work on excitation to the metastable “clock” state and coherently convertible, dual-type nuclear spin qubits, as well as efforts toward remote entanglement generation. These results constitute an important step towards resource- and time-efficient measurement-based quantum computation and, with the metastable nuclear spin qubit, telecom-band quantum networking.