Resource-efficient digital characterization and control of classical non-Gaussian noise

We show the usefulness of frame-based characterization and control [PRX Quantum 2, 030315 (2021)] for non-Markovian open quantum systems subject to classical non-Gaussian dephasing. By focusing on the paradigmatic case of random telegraph noise and working in a digital window frame, we demonstrate h...

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Bibliographic Details
Published inApplied physics letters Vol. 122; no. 24
Main Authors Dong, Wenzheng, Paz-Silva, Gerardo A., Viola, Lorenza
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 12.06.2023
Subjects
Applied physics
Decoupling
Design optimization
Random noise
Spectroscopy
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Summary:We show the usefulness of frame-based characterization and control [PRX Quantum 2, 030315 (2021)] for non-Markovian open quantum systems subject to classical non-Gaussian dephasing. By focusing on the paradigmatic case of random telegraph noise and working in a digital window frame, we demonstrate how to achieve higher-order control-adapted spectral estimation for the noise-optimized dynamical decoupling design. We find that, depending on the operating parameter regime, control that is optimized based on non-Gaussian noise spectroscopy can substantially outperform standard Walsh decoupling sequences as well as sequences that are optimized based solely on Gaussian noise spectroscopy. This approach is also intrinsically more resource-efficient than frequency-domain comb-based methods.
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content type line 14
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0153530