CSQD improves SQD energy estimates in strongly correlated systems by replacing a global reference occupancy vector with cluster-specific ones, lowering energies by up to 15.95 mHa for stretched N2 and 57.82 mHa for [2Fe-2S].
ffsim: Faster simulations of fermionic quantum circuits
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Cluster-Adaptive Sample-Based Quantum Diagonalization for Strongly Correlated Systems
CSQD improves SQD energy estimates in strongly correlated systems by replacing a global reference occupancy vector with cluster-specific ones, lowering energies by up to 15.95 mHa for stretched N2 and 57.82 mHa for [2Fe-2S].