Phase transitions in a programmable quantum spin glass simulator

Science
R HarrisJ Yao

Abstract

Understanding magnetic phases in quantum mechanical systems is one of the essential goals in condensed matter physics, and the advent of prototype quantum simulation hardware has provided new tools for experimentally probing such systems. We report on the experimental realization of a quantum simulation of interacting Ising spins on three-dimensional cubic lattices up to dimensions 8 × 8 × 8 on a D-Wave processor (D-Wave Systems, Burnaby, Canada). The ability to control and read out the state of individual spins provides direct access to several order parameters, which we used to determine the lattice's magnetic phases as well as critical disorder and one of its universal exponents. By tuning the degree of disorder and effective transverse magnetic field, we observed phase transitions between a paramagnetic, an antiferromagnetic, and a spin-glass phase.

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Citations

Sep 12, 2019·Scientific Reports·Shuntaro OkadaShinichiro Taguchi
Sep 7, 2019·Nature Communications·D M SilevitchT F Rosenbaum
Mar 6, 2019·The Review of Scientific Instruments·Pengjie WangXi Lin
Apr 6, 2019·Physical Review Letters·Ming GongJian-Wei Pan
Jul 1, 2020·Physical Review Letters·Nathan K LysnePoul S Jessen
Feb 16, 2019·Scientific Reports·Shuntaro OkadaShinichiro Taguchi
Dec 24, 2019·Physical Review Letters·Erik AurellRoberto Mulet
Mar 24, 2020·Physical Review Letters·Phillip WeinbergAnders W Sandvik
Oct 22, 2019·Physical Review Letters·Tobias Graß
Aug 13, 2020·Scientific Reports·Konrad JałowieckiBartłomiej Gardas
Jul 31, 2021·Science·Andrew D KingAlejandro Lopez-Bezanilla
Jul 9, 2021·Nature·Sepehr EbadiMikhail D Lukin

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