Efficient Pauli Channel Estimation with Logarithmic Quantum Memory

In this work, we consider one of the prototypical tasks for characterizing the structure of noise in quantum devices: estimating eigenvalues of an n-qubit Pauli noise channel. Prior work [Chen et al., Phys. Rev. A 105, 032435 (2022)] has proved no-go theorems for this task in the practical regime in...

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Bibliographic Details
Main Authors: Sitan Chen, Weiyuan Gong
Format: Article
Language:English
Published: American Physical Society 2025-05-01
Series:PRX Quantum
Online Access:http://doi.org/10.1103/PRXQuantum.6.020323
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