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Krylov Diagonalization of Large Many-Body Hamiltonians on a Quantum Processor

Summary by Nature
The estimation of low energies of many-body systems is a cornerstone of the computational quantum sciences. Variational quantum algorithms can be used to prepare ground states on pre-fault-tolerant quantum processors, but their lack of convergence guarantees and impractical number of cost function estimations prevent systematic scaling of experiments to large systems. Alternatives to variational approaches are needed for large-scale experiments …

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insideHPC broke the news in on Thursday, July 10, 2025.
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