A conditional-fidelity witness on projected small subsystems certifies entanglement, magic, and circuit complexity of generic many-body states with constant sample complexity, with fidelity certification supported by numerics.
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Certifying localizable quantum properties with constant sample complexity
A conditional-fidelity witness on projected small subsystems certifies entanglement, magic, and circuit complexity of generic many-body states with constant sample complexity, with fidelity certification supported by numerics.