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dc.contributor.authorGomis Bresco, Jordi
dc.contributor.authorArtigas García, David
dc.contributor.authorTorner Sabata, Lluís
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2020-03-23T10:58:07Z
dc.date.available2020-03-23T10:58:07Z
dc.date.issued2019-10-04
dc.identifier.citationGomis, J.; Artigas, D.; Torner, L. Transition from Dirac points to exceptional points in anisotropic waveguides. "Physical review research", 4 Octubre 2019, vol. 1, núm. 3, p. 033010-1-033010-8.
dc.identifier.issn2643-1564
dc.identifier.otherhttps://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.1.033010
dc.identifier.urihttp://hdl.handle.net/2117/180876
dc.description.abstractWe uncover the existence of Dirac and exceptional points in waveguides made of anisotropic materials, and study the transition between them. Dirac points in the dispersion diagram appear at propagation directions where the matrix describing the eigenvalue problem for bound states splits into two blocks, sorting the eigenmodes either by polarization or by inner mode symmetry. Introducing a non-Hermitian channel via a suitable leakage mechanism causes the Dirac points to transform into exceptional points connected by a Fermi arc. The exceptional points arise as improper hybrid leaky states and, importantly, are found to occur always out of the anisotropy symmetry planes.
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshIntegrated optics
dc.subject.lcshOptical wave guides
dc.subject.lcshAnisotropy
dc.titleTransition from Dirac points to exceptional points in anisotropic waveguides
dc.typeArticle
dc.subject.lemacÒptica integrada
dc.subject.lemacAnisotropia
dc.contributor.groupUniversitat Politècnica de Catalunya. FOTONICA - Grup de Recerca de Fotònica
dc.identifier.doi10.1103/PhysRevResearch.1.033010
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://journals.aps.org/prresearch/
dc.rights.accessOpen Access
local.identifier.drac26012516
dc.description.versionPostprint (published version)
local.citation.authorGomis, J.; Artigas, D.; Torner, L.
local.citation.publicationNamePhysical review research
local.citation.volume1
local.citation.number3
local.citation.startingPage033010-1
local.citation.endingPage033010-8


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Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain