On the connection between least squares, regularization, and classical shadows

On the connection between least squares, regularization, and classical shadows

Classical shadows (CS) offer a resource-efficient means to estimate quantum observables, circumventing the need for exhaustive state tomography. Here, we clarify and explore the connection between CS techniques and least squares (LS) and regularized least squares (RLS) methods commonly used in machi...

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Bibliographic Details
Main Authors: Zhihui Zhu, Joseph M. Lukens, Brian T. Kirby
Format: Article
Language:English
Published: Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften 2024-08-01
Series:Quantum
Online Access:https://quantum-journal.org/papers/q-2024-08-29-1455/pdf/
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