Skip navigation
Skip navigation

Discrete vortex solitons and parity time symmetry

Leykam, Daniel; Konotop, Vladimir V; Desyatnikov, Anton S

Description

We study the effect of lifting the degeneracy of vortex modes with a parity time (PT) symmetric defect, using discrete vortices in a circular array of nonlinear waveguides as an example. When the defect is introduced, the degenerate linear vortex modes spontaneously break PT symmetry and acquire complex eigenvalues, but nonlinear propagating modes with real propagation constants can still exist. The stability of nonlinear modes depends on both the magnitude and the sign of the vortex charge;...[Show more]

dc.contributor.authorLeykam, Daniel
dc.contributor.authorKonotop, Vladimir V
dc.contributor.authorDesyatnikov, Anton S
dc.date.accessioned2016-05-02T00:50:05Z
dc.date.available2016-05-02T00:50:05Z
dc.identifier.issn0146-9592
dc.identifier.urihttp://hdl.handle.net/1885/101159
dc.description.abstractWe study the effect of lifting the degeneracy of vortex modes with a parity time (PT) symmetric defect, using discrete vortices in a circular array of nonlinear waveguides as an example. When the defect is introduced, the degenerate linear vortex modes spontaneously break PT symmetry and acquire complex eigenvalues, but nonlinear propagating modes with real propagation constants can still exist. The stability of nonlinear modes depends on both the magnitude and the sign of the vortex charge; thus PT symmetric systems offer new mechanisms to control discrete vortices.
dc.description.sponsorshipThis work was supported by the Australian Research Council. The work of VVK was supported by the FCT (Portugal) grants PTDC/FIS/112624/2009 and PEst-OE/ FIS/UI0618/2011.
dc.publisherOptical Society of America
dc.rights© 2013 Optical Society of America
dc.sourceOptics letters
dc.subjectKeywords: Circular arrays; Complex eigenvalues; Discrete vortices; New mechanisms; Nonlinear mode; Nonlinear waveguides; Propagating mode; PT symmetries; Real propagation; Symmetric systems; Vortex charge; Vortex mode; Defects; Eigenvalues and eigenfunctions; Plati
dc.titleDiscrete vortex solitons and parity time symmetry
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume38
dc.date.issued2013-02-01
local.identifier.absfor020500
local.identifier.absfor049999
local.identifier.ariespublicationf5625xPUB2418
local.publisher.urlhttp://www.osa.org/en-us/home/
local.type.statusPublished Version
local.contributor.affiliationLeykam, Daniel, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Nonlinear Physics Centre, The Australian National University
local.contributor.affiliationKonotop, Vladimir, Universidade de Lisboa, Portugal
local.contributor.affiliationDesyatnikov, Anton S, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Nonlinear Physics Centre, The Australian National University
local.identifier.essn1539-4794
local.bibliographicCitation.issue3
local.bibliographicCitation.startpage371
local.bibliographicCitation.lastpage373
local.identifier.doi10.1364/OL.38.000371
dc.date.updated2016-06-14T08:35:36Z
local.identifier.scopusID2-s2.0-84873372818
CollectionsANU Research Publications

Download

There are no files associated with this item.


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  22 January 2019/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator