Topological helical edge states in water waves over a topographical bottom

Handle URI:
http://hdl.handle.net/10754/626287
Title:
Topological helical edge states in water waves over a topographical bottom
Authors:
Wu, Shi qiao; Wu, Ying ( 0000-0002-7919-1107 ) ; Mei, Jun ( 0000-0002-6308-4956 )
Abstract:
We present the discovery of topologically protected helical edge states in water wave systems, which are realized in water wave propagating over a topographical bottom whose height is modulated periodically in a two-dimensional triangular pattern. We develop an effective Hamiltonian to characterize the dispersion relation and use spin Chern numbers to classify the topology. Through full wave simulations we unambiguously demonstrate the robustness of the helical edge states which are immune to defects and disorders so that the backscattering loss is significantly reduced. A spin splitter is designed for water wave systems, where helical edge states with different spin orientations are spatially separated with each other, and potential applications are discussed.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Citation:
Wu S qiao, Wu Y, Mei J (2017) Topological helical edge states in water waves over a topographical bottom. New Journal of Physics. Available: http://dx.doi.org/10.1088/1367-2630/aa9cdb.
Publisher:
IOP Publishing
Journal:
New Journal of Physics
Issue Date:
27-Nov-2017
DOI:
10.1088/1367-2630/aa9cdb
Type:
Article
ISSN:
1367-2630
Sponsors:
The work described here is supported by the National Natural Science Foundation of China (Grant Nos.11274120 and 11574087) and King Abdullah University of Science and Technology (KAUST)
Additional Links:
http://iopscience.iop.org/article/10.1088/1367-2630/aa9cdb
Appears in Collections:
Articles; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorWu, Shi qiaoen
dc.contributor.authorWu, Yingen
dc.contributor.authorMei, Junen
dc.date.accessioned2017-12-05T06:12:00Z-
dc.date.available2017-12-05T06:12:00Z-
dc.date.issued2017-11-27en
dc.identifier.citationWu S qiao, Wu Y, Mei J (2017) Topological helical edge states in water waves over a topographical bottom. New Journal of Physics. Available: http://dx.doi.org/10.1088/1367-2630/aa9cdb.en
dc.identifier.issn1367-2630en
dc.identifier.doi10.1088/1367-2630/aa9cdben
dc.identifier.urihttp://hdl.handle.net/10754/626287-
dc.description.abstractWe present the discovery of topologically protected helical edge states in water wave systems, which are realized in water wave propagating over a topographical bottom whose height is modulated periodically in a two-dimensional triangular pattern. We develop an effective Hamiltonian to characterize the dispersion relation and use spin Chern numbers to classify the topology. Through full wave simulations we unambiguously demonstrate the robustness of the helical edge states which are immune to defects and disorders so that the backscattering loss is significantly reduced. A spin splitter is designed for water wave systems, where helical edge states with different spin orientations are spatially separated with each other, and potential applications are discussed.en
dc.description.sponsorshipThe work described here is supported by the National Natural Science Foundation of China (Grant Nos.11274120 and 11574087) and King Abdullah University of Science and Technology (KAUST)en
dc.publisherIOP Publishingen
dc.relation.urlhttp://iopscience.iop.org/article/10.1088/1367-2630/aa9cdben
dc.rightsThis is an author-created, un-copyedited version of an article accepted for publication/published in New Journal of Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://doi.org/10.1088/1367-2630/aa9cdb. As the Version of Record of this article is going to be / has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately Everyone is permitted to use all or part of the original content in this article, provided that they adhere to all the terms of the licence https://creativecommons.org/licences/by/3.0en
dc.rights.urihttps://creativecommons.org/licences/by/3.0en
dc.subjecthelical edge statesen
dc.subjectwater waveen
dc.subjecttopologyen
dc.titleTopological helical edge states in water waves over a topographical bottomen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.identifier.journalNew Journal of Physicsen
dc.eprint.versionPost-printen
dc.contributor.institutionSouth China University of Technology, Guangzhou, 510640, CHINAen
dc.contributor.institutionDepartment of Physics, South China University of Technology, 381 Wushan Road, Guangzhou 510640, Guangzhou, CHINAen
kaust.authorWu, Yingen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.