Benchmarking quantum simulation at scale
arXiv:2607.14212
The paper introduces a scalable verification method for non‑equilibrium quantum simulations using stabilizer scars, enabling efficient fidelity estimation and providing a benchmark for quantum‑advantage experiments.
Abstract
The applications for which quantum computers will clearly outperform classical computers are still being identified and benchmarking such an advantage is challenging. We propose a scalable verification scheme for non-equilibrium quantum simulation based on stabilizer scars, a special class of quantum many-body scars, whose structure ensures both classical simulability and efficient direct fidelity estimation. Assuming a physically motivated error model, we show that the fidelity of quantum simulating these states bounds the fidelity of classically intractable simulations, providing a benchmark for quantum-advantage experiments in non-equilibrium dynamics.
18 pages, 8 figures