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Accurate quantum-centric simulations of supramolecular interactions

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arxiv 2410.09209 v2 pith:N2XDBG7M submitted 2024-10-11 quant-ph

Accurate quantum-centric simulations of supramolecular interactions

classification quant-ph
keywords interactionsquantumsimulationsaccurateapproachchemicalhydrophobicmethods
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present the first quantum-centric simulations of noncovalent interactions using a supramolecular approach. We simulate the potential energy surfaces (PES) of the water and methane dimers, featuring hydrophilic and hydrophobic interactions, respectively, with a sample-based quantum diagonalization (SQD) approach. Our simulations on quantum processors, using 27- and 36-qubit circuits, are in remarkable agreement with classical methods, deviating from complete active space configuration interaction (CASCI) and coupled-cluster singles, doubles, and perturbative triples (CCSD(T)) within 1 kcal/mol in the equilibrium regions of the PES. Finally, we test the capacity limits of the quantum methods for capturing hydrophobic interactions with an experiment on 54 qubits. These results mark significant progress in the application of quantum computing to chemical problems, paving the way for more accurate modeling of noncovalent interactions in complex systems critical to the biological, chemical and pharmaceutical sciences.

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Cited by 8 Pith papers

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