Quantum fluctuations drive nonmonotonic correlations in a qubit lattice.

ABSTRACT: Fluctuations may induce the degradation of order by overcoming ordering interactions, consequently leading to an increase of entropy. This is particularly evident in magnetic systems characterized by nontrivial, constrained disorder, where thermal or quantum fluctuations can yield counterintuitive forms of ordering. Using the proven efficiency of quantum annealers as programmable spin system simulators, we present a study based on entropy postulates and experiments on a platform of programmable superconducting qubits to show that a low level of uncertainty can promote ordering in a system impacted by both thermal and quantum fluctuations. A set of experiments is proposed on a lattice of interacting qubits arranged in a triangular geometry with precisely controlled disorder, effective tempe

SUBMITTER: Lopez-Bezanilla A 

PROVIDER: S-EPMC10796911 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature