QSCI-CMP cuts the quantum sampling cost of SQD-AA by classically preselecting low-excitation, low-seniority determinants and using a compact oracle that checks those properties in superposition.
Each multi-controlled phase gate costsO(n) T gates [23, 24], so ˆOM\T costs O(|M \ T | ·n) in total
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QSCI-CMP: Quantum-Selected Configuration Interaction with Chemically Motivated Preselection
QSCI-CMP cuts the quantum sampling cost of SQD-AA by classically preselecting low-excitation, low-seniority determinants and using a compact oracle that checks those properties in superposition.