Alberto Nocera:" "Quantum Simulation using a Quantum Annealer"
Автор: Quantum Matter Seminars NU
Загружено: 2025-02-20
Просмотров: 151
The overarching goal of the noisy intermediate-scale quantum era is the demonstration that quantum processing units can solve a problem of practical interest at a scale that is impossible for any existing classical computer. As envisioned by Feynman in 1982, a natural playground for such a demonstration is quantum simulation: to simulate a quantum system using an artificial device mimicking its behavior. In this talk, I show that the latest D-Wave superconducting quantum annealing processor can faithfully simulate the non-equilibrium dynamics of a magnetic spin-glass quenched through a quantum critical point, beyond the scale possible to the best known classical algorithms. The use of tensor network methods has a key role in establishing this result: besides benchmarking, their known entanglement scaling properties
help establish the quantum device functionality beyond the classically simulatable regime [1].
Beyond the classically tractable system sizes, the verification of the D-Wave analog quantum simulator is established measuring critical exponents closely matching estimates from the expected universality class using Kibble-Zurek theory.
[1] A. King, A. Nocera, et al. "Computational supremacy in quantum simulation", arXiv:2403.00910 [quant-ph] (2024).
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