In the transverse field XY spin chain, single-qubit magic turns on just after the critical point, peaks at the factorizable ground state, and two-qubit magic persists over long distances and traces the quantum critical region.
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Characterization of an operational quantum resource in a critical many-body system
In the transverse field XY spin chain, single-qubit magic turns on just after the critical point, peaks at the factorizable ground state, and two-qubit magic persists over long distances and traces the quantum critical region.