An Er3+ spin sensor in CaWO4 measures the hyperfine NMR spectrum of a single 93Nb nuclear spin-9/2 with Hertz resolution, determining its site, position, quadrupolar tensor, and two new terms in the spin Hamiltonian.
The three-pulse blockπ n,n+1, πn+1,n+2, πn,n+1 coherently maps the population according to|n⟩ → |n+ 1⟩and |n+1⟩ → |n+2⟩(up to global phases)
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Precision hyperfine spectroscopy of an individual nuclear-spin-9/2
An Er3+ spin sensor in CaWO4 measures the hyperfine NMR spectrum of a single 93Nb nuclear spin-9/2 with Hertz resolution, determining its site, position, quadrupolar tensor, and two new terms in the spin Hamiltonian.