Fidelity decay and error accumulation in random quantum circuits

Fidelity decay captures the inevitable state degradation in any practical implementation of a quantum process. We devise bounds for the decay of fidelity for a generic evolution given by a random quantum circuit model that encompasses errors arising from the implementation of two-qubit gates and qub...

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Bibliographic Details
Main Author: Nadir Samos Sáenz de Buruaga, Rafał Bistroń, Marcin Rudziński, Rodrigo M. C. Pereira, Karol Życzkowski, Pedro Ribeiro
Format: Article
Language:English
Published: SciPost 2025-07-01
Series:SciPost Physics
Online Access:https://scipost.org/SciPostPhys.19.1.013
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