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dc.contributor.authorLuukko, Perttu
dc.contributor.authorDrury, Byron
dc.contributor.authorKlales, Anna
dc.contributor.authorKaplan, Lev
dc.contributor.authorHeller, Eric J.
dc.contributor.authorRäsänen, Esa
dc.date.accessioned2016-12-13T07:32:06Z
dc.date.available2016-12-13T07:32:06Z
dc.date.issued2016
dc.identifier.citationLuukko, P., Drury, B., Klales, A., Kaplan, L., Heller, E. J., & Räsänen, E. (2016). Strong quantum scarring by local impurities. <i>Scientific Reports</i>, <i>6</i>, Article 37656. <a href="https://doi.org/10.1038/srep37656" target="_blank">https://doi.org/10.1038/srep37656</a>
dc.identifier.otherCONVID_26341972
dc.identifier.otherTUTKAID_71863
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/52282
dc.description.abstractWe discover and characterise strong quantum scars, or quantum eigenstates resembling classical periodic orbits, in two-dimensional quantum wells perturbed by local impurities. These scars are not explained by ordinary scar theory, which would require the existence of short, moderately unstable periodic orbits in the perturbed system. Instead, they are supported by classical resonances in the unperturbed system and the resulting quantum near-degeneracy. Even in the case of a large number of randomly scattered impurities, the scars prefer distinct orientations that extremise the overlap with the impurities. We demonstrate that these preferred orientations can be used for highly efficient transport of quantum wave packets across the perturbed potential landscape. Assisted by the scars, wave-packet recurrences are significantly stronger than in the unperturbed system. Together with the controllability of the preferred orientations, this property may be very useful for quantum transport applications.
dc.language.isoeng
dc.publisherNature Publishing Group
dc.relation.ispartofseriesScientific Reports
dc.subject.otherquantum scars
dc.titleStrong quantum scarring by local impurities
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201611294827
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.contributor.oppiaineNanoscience Centerfi
dc.contributor.oppiaineNanoscience Centeren
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2016-11-29T13:15:12Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn2045-2322
dc.relation.numberinseries0
dc.relation.volume6
dc.type.versionpublishedVersion
dc.rights.copyright© the Authors, 2016. This work is licensed under a Creative Commons Attribution 4.0 International License.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1038/srep37656


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© the Authors, 2016. This work is licensed under a Creative Commons Attribution 4.0 International License.
Except where otherwise noted, this item's license is described as © the Authors, 2016. This work is licensed under a Creative Commons Attribution 4.0 International License.