Accurate quantum-centric simulations of supramolecular interactions

• URL: http://arxiv.org/abs/2410.09209v2
• Date: Fri, 22 Nov 2024 14:57:34 GMT
• Title: Accurate quantum-centric simulations of supramolecular interactions
• Authors: Danil Kaliakin, Akhil Shajan, Javier Robledo Moreno, Zhen Li, Abhishek Mitra, Mario Motta, Caleb Johnson, Abdullah Ash Saki, Susanta Das, Iskandar Sitdikov, Antonio Mezzacapo, Kenneth M. Merz Jr,
• Abstract summary: We present the first quantum-centric simulations of noncovalent interactions using a supramolecular approach. Results mark significant progress in the application of quantum computing to chemical problems.
• Score: 1.641227459215045
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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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