Emergence of X states in a quantum impurity model

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dc.contributor.authorCavalcante, M. F.
dc.contributor.authorBonança, Marcus V. S.
dc.contributor.authorMiranda, Eduardo
dc.contributor.authorDeffner, Sebastian
dc.date.accessioned2025-06-17T14:44:54Z
dc.date.available2025-06-17T14:44:54Z
dc.date.issued2025-05-02
dc.description.abstractIn the present work, we demonstrate the emergence of X states in the long-time response of a locally perturbed many-body quantum impurity model. The emergence of the double-qubit state is heralded by the lack of decay of the response function as well as the out-of-time order correlator, signifying the trapping of excitations and hence information in edge modes. Surprisingly, after carrying out a quantum information theory characterization, we show that such states exhibit genuine quantum correlations.
dc.description.sponsorshipM.F.C. would like to thank Michael Kolodrubetz for useful discussions. This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Brazil, through Grant No. 200267/2023-0. M.V.S.B. acknowledges the support of CNPq under Grant No. 304120/2022-7. E.M. acknowledges the support of CNPq under Grant No. 309584/2021-3. The work was also financed (M.V.S.B. and E.M.) in part by the São Paulo Research Foundation (FAPESP), Brazil, Process No. 2022/15453-0. S.D. and M.F.C. acknowledge support from the John Templeton Foundation under Grant No. 62422
dc.description.urihttps://link.aps.org/doi/10.1103/PhysRevResearch.7.L022027
dc.format.extent7 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m2dmkx-odz9
dc.identifier.citationCavalcante, Moallison F., Marcus V. S. Bonança, Eduardo Miranda, and Sebastian Deffner. “Emergence of X States in a Quantum Impurity Model.” Physical Review Research 7, no. 2 (May 2, 2025): L022027. https://doi.org/10.1103/PhysRevResearch.7.L022027.
dc.identifier.urihttps://doi.org/10.1103/PhysRevResearch.7.L022027
dc.identifier.urihttp://hdl.handle.net/11603/38804
dc.language.isoen_US
dc.publisherAPS
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Physics Department
dc.relation.ispartofUMBC Student Collection
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectUMBC Quantum Thermodynamics Group
dc.titleEmergence of X states in a quantum impurity model
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0003-0504-6932
dcterms.creatorhttps://orcid.org/0000-0002-2003-078X

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