Quantum science with nuclear spin qubits in ytterbium-171 atom arrays

Individually controlled neutral atoms are emerging as a leading platform for quantum science. Alkaline earth (-like) atoms in particular offer many new opportunities that utilize their long-lived metastable states and decoupled nuclear spins. In this talk, we will highlight these new directions for quantum science with tweezer arrays and we will summarize the state of the field. We will then focus on our work with arrays of ytterbium-171 atoms. We will present results on non-destructive readout of the ground nuclear spin-1/2 qubit in which the atom remains in the detected state with high probability. We combine this capability with nuclear qubit rotations to realize consecutive measurements in variable bases – a crucial ingredient in measurement-based quantum computing. We will then present our work on excitation to the metastable "clock" state and the associated coherently convertible dual-type nuclear spin qubit. These results are significant steps towards the implementation of quantum computing and networking protocols based on metastable nuclear spin qubits.