Dominant Reaction Pathways by Quantum Computing

Hauke, Philipp; Mattiotti, Giovanni; Faccioli, Pietro

doi:10.48550/arxiv.2007.13788

Cited by 1 publication

(1 citation statement)

References 19 publications

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“…Finally, Ref. 29 translates the problem of finding the reaction pathways as an optimization problem to be solved by quantum annealing.…”

Section: Introductionmentioning

confidence: 99%

Sampling, rates, and reaction currents through reverse stochastic quantization on quantum computers

Mazzola

2021

Preprint

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The quest for improved sampling methods to solve statistical mechanics problems of physical and chemical interest proceeds with renewed efforts since the invention of the Metropolis algorithm, in 1953. In particular, the understanding of thermally activated rare-event processes between long-lived metastable states, such as protein folding, is still elusive. In this case, one needs both the finite-temperature canonical distribution function and the reaction current between the reactant and product states, to completely characterize the dynamic. Here we show how to tackle this problem using a quantum computer. We use the connection between a classical stochastic dynamics and the Schroedinger equation, also known as stochastic quantization, to variationally prepare quantum states allowing us to unbiasedly sample from a Boltzmann distribution. Similarly, reaction rate constants can be computed as ground state energies of suitably transformed operators, following the supersymmetric extension of the formalism. Finally, we propose a hybrid quantum-classical sampling scheme to escape local minima, and explore the configuration space in both real-space and spin hamiltonians. We indicate how to realize the quantum algorithms constructively, without assuming the existence of oracles, or quantum walk operators. The quantum advantage concerning the above applications is discussed.

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“…Finally, Ref. 29 translates the problem of finding the reaction pathways as an optimization problem to be solved by quantum annealing.…”

Section: Introductionmentioning

confidence: 99%