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5 papers · 1 filter
Improving nonstoquastic quantum annealing with spin-reversal transformations
Eleni Marina Lykiardopoulou, Alex Zucca, Sam A. Scivier +1
Nonstoquastic Hamiltonians are hard to simulate due to the sign problem in quantum Monte Carlo simulation. It is however unclear whether nonstoquasticity can lead to advantage in q…
Qubit spin ice
Andrew D. King, Cristiano Nisoli, Edward D. Dahl +2
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…
Error measurements for a quantum annealer using the one-dimensional Ising model with twisted boundaries
Nicholas Chancellor, Philip J. D. Crowley, Tanja Đurić +5
A finite length ferromagnetic chain with opposite spin polarisation imposed at its two ends is one of the simplest frustrated spin models. In the clean classical limit the domain w…
Improving performance of logical qubits by parameter tuning and topology compensation
Jack Raymond, Ndiamé Ndiaye, Gautam Rayaprolu +1
Optimization or sampling of arbitrary pairwise Ising models, in a quantum annealing protocol of constrained interaction topology, can be enabled by a minor-embedding procedure. The…
Simulating the Shastry-Sutherland Ising Model using Quantum Annealing
Paul Kairys, Andrew D. King, Isil Ozfidan +4
Frustration represents an essential feature in the behavior of magnetic materials when constraints on the microscopic Hamiltonian cannot be satisfied simultaneously. This gives ris…