Overlapped grouping enables linear-in-terms variance reduction for quantum energy estimation via a new repacking algorithm, with numerical gains growing with problem size.
Measurements of Quantum Hamil- tonians with Locally-Biased Classical Shadows.Commu- nications in Mathematical Physics, 391(3):951–967, May 2022
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Overlapped groupings for quantum energy estimation: Maximal variance reduction and deterministic algorithms for reducing variance
Overlapped grouping enables linear-in-terms variance reduction for quantum energy estimation via a new repacking algorithm, with numerical gains growing with problem size.