Dresden 2026 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 9: Decoherence and Open Systems I
QI 9.4: Vortrag
Dienstag, 10. März 2026, 14:45–15:00, BEY/0245
Random matrix perspective on probabilistic error cancellation — •Leonhard Moske1, David Luitz1, Pedro Ribeiro2, Tomaž Prosen3, Sergiy Denysov4, and Karol Zyczkowski5, 6 — 1Institute of Physics, University of Bonn, Germany — 2CeFEMA-LaPMET, Departamento de Fisica, Instituto Superior Tecnico, Universidade de Lisboa, Portugal — 3Faculty of Mathematics and Physics, University of Ljubljana, Slovenia — 4Department of Computer Science, OsloMet, Oslo Metropolitan University, Norway — 5Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University, Poland — 6Center for Theoretical Physics, Polish Academy of Sciences, Poland
Probabilistic error cancellation is an attempt to reverse the effect of dissipative noise channels on quantum computers by applying unphysical channels after the execution of a quantum algorithm on noisy hardware. We investigate on general grounds the properties of such unphysical quantum channels by considering a random matrix ensemble modeling noisy quantum algorithms. We show that the complex spectra of denoiser channels inherit their structure from random Lindbladians. Additional structure imposed by the locality of noise channels of the quantum computer emerges in terms of a hierarchy of timescales.