Kagome qubit ice
arXiv:2301.01853 · doi:10.1038/s41467-023-36760-1
Abstract
Topological phases of spin liquids with constrained disorder can host a kinetics of fractionalized excitations. However, spin-liquid phases with distinct kinetic regimes have proven difficult to observe experimentally. Here we present a realization of kagome spin ice in the superconducting qubits of a quantum annealer, and use it to demonstrate a field-induced kinetic crossover between spin-liquid phases. Employing fine control over local magnetic fields, we show evidence of both the Ice-I phase and an unconventional field-induced Ice-II phase. In the latter, a charge-ordered yet spin-disordered topological phase, the kinetics proceeds via pair creation and annihilation of strongly correlated, charge conserving, fractionalized excitations. As these kinetic regimes have resisted characterization in other artificial spin ice realizations, our results demonstrate the utility of quantum-driven kinetics in advancing the study of topological phases of spin liquids.
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- Unraveling Reverse Annealing: A Study of D-Wave Quantum Annealers
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- Classical Criticality via Quantum Annealing
- Clock Factorized Quantum Monte Carlo Method for Long-range Interacting Systems
- Loop Algorithm for Quantum Transverse Ising Model in a Longitudinal Field
- Comparing Quantum Annealing and Spiking Neuromorphic Computing for Sampling Binary Sparse Coding QUBO Problems
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- Quantum annealing and condensed matter physics
- Topological geometric frustration in a cube-surface artificial spin ice
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