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Article: Vortex degeneracy lifting and Aharonov-Bohm-like interference in deformed photonic graphene

TitleVortex degeneracy lifting and Aharonov-Bohm-like interference in deformed photonic graphene
Authors
Issue Date2017
Citation
Optics Letters, 2017, v. 42, n. 5, p. 915-918 How to Cite?
Abstract© 2017 Optical Society of America. Photonic graphene, a honeycomb lattice of evanescently coupled waveguides, has provided a superior platform for investigating a host of fundamental phenomena such as unconventional edge states, synthetic magnetic fields, photonic Landau levels, Floquet topological insulators, and pseudospin effects. Here, we demonstrate both experimentally and numerically, topological vortex degeneracy lifting and Aharonov-Bohm-like interference from local deformation in a photonic honeycomb lattice. When a single valley is excited, lattice deformation leads to the generation of a vortex pair due to the lifting of degeneracy associated with pseudospin states. In the case of double-valley excitation, we observe the Aharonov-Bohm-like interference merely due to the deformation of the graphene lattice, which gives rise to an artificial gauge field. Our results may provide insight into the understanding of similar phenomena in other graphene-like materials and structures.
Persistent Identifierhttp://hdl.handle.net/10722/256815
ISSN
2017 Impact Factor: 3.589
2015 SCImago Journal Rankings: 2.397
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, Peng-
dc.contributor.authorGallardo, Daniel-
dc.contributor.authorLiu, Sheng-
dc.contributor.authorGao, Yuanmei-
dc.contributor.authorLi, Tongcang-
dc.contributor.authorWang, Yuan-
dc.contributor.authorChen, Zhigang-
dc.contributor.authorZhang, Xiang-
dc.date.accessioned2018-07-24T08:58:00Z-
dc.date.available2018-07-24T08:58:00Z-
dc.date.issued2017-
dc.identifier.citationOptics Letters, 2017, v. 42, n. 5, p. 915-918-
dc.identifier.issn0146-9592-
dc.identifier.urihttp://hdl.handle.net/10722/256815-
dc.description.abstract© 2017 Optical Society of America. Photonic graphene, a honeycomb lattice of evanescently coupled waveguides, has provided a superior platform for investigating a host of fundamental phenomena such as unconventional edge states, synthetic magnetic fields, photonic Landau levels, Floquet topological insulators, and pseudospin effects. Here, we demonstrate both experimentally and numerically, topological vortex degeneracy lifting and Aharonov-Bohm-like interference from local deformation in a photonic honeycomb lattice. When a single valley is excited, lattice deformation leads to the generation of a vortex pair due to the lifting of degeneracy associated with pseudospin states. In the case of double-valley excitation, we observe the Aharonov-Bohm-like interference merely due to the deformation of the graphene lattice, which gives rise to an artificial gauge field. Our results may provide insight into the understanding of similar phenomena in other graphene-like materials and structures.-
dc.languageeng-
dc.relation.ispartofOptics Letters-
dc.titleVortex degeneracy lifting and Aharonov-Bohm-like interference in deformed photonic graphene-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1364/OL.42.000915-
dc.identifier.scopuseid_2-s2.0-85014707564-
dc.identifier.volume42-
dc.identifier.issue5-
dc.identifier.spage915-
dc.identifier.epage918-
dc.identifier.eissn1539-4794-
dc.identifier.isiWOS:000394461400007-

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