A hybrid QACG solver uses quantum spectral initialization to split condition-number burden between quantum and classical parts, yielding runtime gains in identified regimes for the 3D Poisson equation.
Define the 1D periodic discrete Laplacian L∈Rn×nby L= 1 h2 2−1 0···0−1 −1 2−1
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Quantum-accelerated conjugate gradient method via spectral initialization
A hybrid QACG solver uses quantum spectral initialization to split condition-number burden between quantum and classical parts, yielding runtime gains in identified regimes for the 3D Poisson equation.