Quantum ensemble engineering aligns sampling weights with operator sign structures via basis-resolved correlator reformulation and specialized circuits, exposing suppressed contributions in infinite-temperature correlation functions on IBM processors up to 20 qubits.
Instead, probability mass is concentrated in a restricted region of the computational basis
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Ensemble Engineering to Overcome Destructive Cancellation in Quantum Measurements
Quantum ensemble engineering aligns sampling weights with operator sign structures via basis-resolved correlator reformulation and specialized circuits, exposing suppressed contributions in infinite-temperature correlation functions on IBM processors up to 20 qubits.