Non-Markovian noise that cannot be dynamically decoupled by periodic spin echo pulses

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dc.contributor.authorBurgarth, Danielen
dc.contributor.authorFacchi, Paoloen
dc.contributor.authorFraas, Martinen
dc.contributor.authorHillier, Robinen
dc.date.accessioned2022-04-06T12:17:42Zen
dc.date.available2022-04-06T12:17:42Zen
dc.date.issued2021-08en
dc.description.abstractDynamical decoupling is the leading technique to remove unwanted interactions in a vast range of quantum systems through fast rotations. But what determines the timescale of such rotations in order to achieve good decoupling? By providing an explicit counterexample of a qubit coupled to a charged particle and magnetic monopole, we show that such time-scales cannot be decided by the decay profile induced by the noise: even though the system shows a quadratic decay (a Zeno region revealing non-Markovian noise), it cannot be decoupled by periodic spin echo pulses, no matter how fast the rotations.en
dc.description.notesDB acknowledges support by the Australian Research Council (project number FT190100106). PF is partially supported by the Italian National Group of Mathematical Physics (GNFM-INdAM), by Istituto Nazionale di Fisica Nucleare (INFN) through the project "QUANTUM", and by Regione Puglia and QuantERA ERA-NET Cofund in Quantum Technologies (GA No. 731473), project PACE-IN.en
dc.description.sponsorshipAustralian Research CouncilAustralian Research Council [FT190100106]; Italian National Group of Mathematical Physics (GNFM-INdAM)Istituto Nazionale di Alta Matematica (INDAM); Istituto Nazionale di Fisica Nucleare (INFN) through the project "QUANTUM"; Regione PugliaRegione Puglia; QuantERA ERA-NET Cofund in Quantum Technologies, project PACE-IN [731473]en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.21468/SciPostPhys.11.2.027en
dc.identifier.issn2542-4653en
dc.identifier.issue2en
dc.identifier.other27en
dc.identifier.urihttp://hdl.handle.net/10919/109567en
dc.identifier.volume11en
dc.language.isoenen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.titleNon-Markovian noise that cannot be dynamically decoupled by periodic spin echo pulsesen
dc.title.serialSciPost Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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