Preprint
Sep 2026
An analysis of iterative refinement for quantum linear system solvers
An IR scheme is developed that solves a sequence of related linear systems to progressively refine the solution while requiring only fixed-precision quantum subroutines, finally obtaining a classical description of a high-precision solution.
Adrian Harkness, Mohammadhossein Mohammadisiahroudi, Brandon Augustino et al.
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