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Wavefront dislocations reveal the topology of quasi-1D photonic insulators

hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorDUTREIX, Clément
hal.structure.identifierInstitut de Physique de Nice [INPHYNI]
dc.contributor.authorBELLEC, Matthieu
hal.structure.identifierLaboratoire de Physique de l'ENS Lyon [Phys-ENS]
dc.contributor.authorDELPLACE, Pierre
hal.structure.identifierInstitut de Physique de Nice [INPHYNI]
dc.contributor.authorMORTESSAGNE, Fabrice
dc.date.issued2021-06-11
dc.identifier.issn2041-1723
dc.description.abstractEnPhase singularities appear ubiquitously in wavefields, regardless of the wave equation. Such topological defects can lead to wavefront dislocations, as observed in a humongous number of classical wave experiments. Phase singularities of wave functions are also at the heart of the topological classification of the gapped phases of matter. Despite identical singular features, topological insulators and topological defects in waves remain two distinct fields. Realising 1D microwave insulators, we experimentally observe a wavefront dislocation – a 2D phase singularity – in the local density of states when the systems undergo a topological phase transition. We show theoretically that the change in the number of interference fringes at the transition reveals the topological index that characterises the band topology in the insulator.
dc.language.isoen
dc.publisherNature Publishing Group
dc.title.enWavefront dislocations reveal the topology of quasi-1D photonic insulators
dc.typeArticle de revue
dc.identifier.doi10.1038/s41467-021-23790-w
dc.subject.halPhysique [physics]
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]
bordeaux.journalNature Communications
bordeaux.page3571
bordeaux.volume12
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-03259570
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03259570v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nature%20Communications&rft.date=2021-06-11&rft.volume=12&rft.issue=1&rft.spage=3571&rft.epage=3571&rft.eissn=2041-1723&rft.issn=2041-1723&rft.au=DUTREIX,%20Cl%C3%A9ment&BELLEC,%20Matthieu&DELPLACE,%20Pierre&MORTESSAGNE,%20Fabrice&rft.genre=article


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