From classical to quantum walks with stochastic resetting on networks

Wald, Sascha; Bottcher, Lucas

doi:10.1103/PhysRevE.103.012122

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From classical to quantum walks with stochastic resetting on networks

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Wald, Sascha
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Wald, S., & Bottcher, L. (2021). From classical to quantum walks with stochastic resetting on networks. Physical Review E, 103(1): 012122. doi:10.1103/PhysRevE.103.012122.

Cite as: https://hdl.handle.net/21.11116/0000-0008-2876-7

Abstract

Random walks are fundamental models of stochastic processes with applications in various fields, including physics, biology, and computer science. We study classical and quantum random walks under the influence of stochastic resetting on arbitrary networks. Based on the mathematical formalism of quantum stochastic walks, we provide a framework of classical and quantum walks whose evolution is determined by graph Laplacians. We study the influence of quantum effects on the stationary and long-time average probability distribution by interpolating between the classical and quantum regime. We compare our analytical results on stationary and long-time average probability distributions with numerical simulations on different networks, revealing differences in the way resets affect the sampling properties of classical and quantum walks.