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arXiv · 2210.12284

Scalable Measurement Error Mitigation via Iterative Bayesian Unfolding

Siddarth Srinivasan·Bibek Pokharel·Gregory Quiroz·Byron Boots
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Abstract

Measurement error mitigation (MEM) techniques are postprocessing strategies to counteract systematic read-out errors on quantum computers (QC). Currently used MEM strategies face a tradeoff: methods that scale well with the number of qubits return negative probabilities, while those that guarantee a valid probability distribution are not scalable. Here, we present a scheme that addresses both of these issues. In particular, we present a scalable implementation of iterative Bayesian unfolding, a standard mitigation technique used in high-energy physics experiments. We demonstrate our method by mitigating QC data from experimental preparation of Greenberger-Horne-Zeilinger (GHZ) states up to 127 qubits and implementation of the Bernstein-Vazirani algorithm on up to 26 qubits.

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Siddarth Srinivasan, Bibek Pokharel, Gregory Quiroz, Byron Boots. 2022-10-21. Scalable Measurement Error Mitigation via Iterative Bayesian Unfolding. https://arxiv.org/abs/2210.12284

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