Related papers: Qubit spin ice

Qubit spin ice

URL: http://arxiv.org/abs/2007.10555v2
Date: Fri, 16 Jul 2021 16:29:14 GMT
Title: Qubit spin ice
Authors: Andrew D. King and Cristiano Nisoli and Edward D. Dahl and Gabriel Poulin-Lamarre and Alejandro Lopez-Bezanilla
Abstract summary: We report a realization of spin ice in a lattice of superconducting qubits. The ground state is classically described by the ice rule, and we achieve control over a fragile degeneracy point. The demonstrated qubit control lays the groundwork for potential future study of topologically protected artificial quantum spin liquids.
Score: 58.720142291102135
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Artificial spin ices are frustrated spin systems that can be engineered, wherein fine tuning of geometry and topology has allowed the design and characterization of exotic emergent phenomena at the constituent level. Here we report a realization of spin ice in a lattice of superconducting qubits. Unlike conventional artificial spin ice, our system is disordered by both quantum and thermal fluctuations. The ground state is classically described by the ice rule, and we achieve control over a fragile degeneracy point leading to a Coulomb phase. The ability to pin individual spins allows us to demonstrate Gauss's law for emergent effective monopoles in two dimensions. The demonstrated qubit control lays the groundwork for potential future study of topologically protected artificial quantum spin liquids.

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