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Mitigated chaos

Bruno Bertini
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⚡ Quantum Brief
Researchers demonstrated that noisy intermediate-scale quantum (NISQ) devices can now surpass classical supercomputers in simulating chaotic quantum systems by using error mitigation techniques to counteract hardware imperfections. The breakthrough leverages classical post-processing to reverse noise-induced errors, enabling accurate simulations of quantum chaos—a regime previously inaccessible due to decoherence and gate inaccuracies. Published in February 2026, the study builds on prior work by Feynman and Deutsch, proving quantum advantage in dynamical simulations despite current hardware limitations. Experiments focused on many-body quantum chaos, a critical testbed for quantum supremacy, showing mitigated results align with theoretical predictions even on imperfect processors. This marks the first practical demonstration where error mitigation extends quantum utility beyond toy problems, paving the way for near-term applications in material science and fundamental physics.
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Subjects Quantum mechanicsQuantum simulation Using classical operations to reverse the effects of noise, current quantum devices can outperform classical computers in simulating the dynamics of a chaotic quantum system. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution Access options Access through your institution Access Nature and 54 other Nature Portfolio journals Get Nature+, our best-value online-access subscription $32.99 / 30 days cancel any time Learn more Subscribe to this journal Receive 12 print issues and online access $259.00 per year only $21.58 per issue Learn more Rent or buy this article Prices vary by article type from$1.95 to$39.95 Learn more Prices may be subject to local taxes which are calculated during checkout Fig. 1: An error mitigated quantum computation. ReferencesFischer, L. E. Nat. Phys. https://doi.org/10.1038/s41567-025-03144-9 (2026).Article Google Scholar Benioff, P. J. Stat. Phys. 22, 563–591 (1980).Article ADS MathSciNet Google Scholar Feynman, R. P. Int. J. Theor. Phys. 21, 467–488 (1982).Article Google Scholar Deutsch, D. Proc. R. Soc. A 400, 97–117 (1985).ADS Google Scholar Shor, P. W. in Proc. 35th Annual Symposium On Foundations of Computer Science 124–134 (IEEE, 1994).Grover, L. K. in Proc. Annual ACM Symposium on Theory of Computing 212–219 (ACM, 1996).Shor, P. W. in Proc. 37th Conference on Foundations of Computer Science 56–65 (IEEE, 1996).Filippov, S., Leahy, M., Rossi, M. A. C. & García-Pérez, G. Preprint at https://doi.org/10.48550/arXiv.2307.11740 (2023).Bertini, B. et al. Phys. Rev. Lett. 123, 210601 (2019).Article ADS MathSciNet Google Scholar Download referencesAuthor informationAuthors and AffiliationsUniversity of Birmingham, Birmingham, UKBruno BertiniAuthorsBruno BertiniView author publicationsSearch author on:PubMed Google ScholarCorresponding authorCorrespondence to Bruno Bertini.Ethics declarations Competing interests The author declares no competing interests. Rights and permissionsReprints and permissionsAbout this articleCite this articleBertini, B. Mitigated chaos. Nat. Phys. (2026). https://doi.org/10.1038/s41567-026-03173-yDownload citationPublished: 03 February 2026Version of record: 03 February 2026DOI: https://doi.org/10.1038/s41567-026-03173-yShare this articleAnyone you share the following link with will be able to read this content:Get shareable linkSorry, a shareable link is not currently available for this article.Copy shareable link to clipboard Provided by the Springer Nature SharedIt content-sharing initiative Dynamical simulations of many-body quantum chaos on a quantum computer Laurin E. FischerMatea LeahySergey N.

Filippov Nature Physics Article 20 Jan 2026

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