A symmetry-constrained preconditioner maps molecular geometry to VQE circuit parameters in the correlated ground-state basin, cutting initialization errors by 38x to 6250x on stretched molecules.
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PIDN replaces repeated multi-noise ZNE evaluations with a trained network that denoises expectation values and gradients from noisy data plus history, achieving comparable optimization on quantum models with 4-6x fewer circuits.
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Symmetry-Protected Basin Localization in Variational Quantum Eigensolvers
A symmetry-constrained preconditioner maps molecular geometry to VQE circuit parameters in the correlated ground-state basin, cutting initialization errors by 38x to 6250x on stretched molecules.
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Accelerating Noisy Variational Quantum Algorithms with Physics-Informed Denoising Networks
PIDN replaces repeated multi-noise ZNE evaluations with a trained network that denoises expectation values and gradients from noisy data plus history, achieving comparable optimization on quantum models with 4-6x fewer circuits.