Fundamental and high-order anapoles in all-dielectric metamaterials via Fano–Feshbach modes competition

Handle URI:
http://hdl.handle.net/10754/622894
Title:
Fundamental and high-order anapoles in all-dielectric metamaterials via Fano–Feshbach modes competition
Authors:
Gongora, J. S. Totero ( 0000-0003-2300-4218 ) ; Favraud, Gael ( 0000-0002-3671-8925 ) ; Fratalocchi, Andrea ( 0000-0001-6769-4439 )
Abstract:
One of the most fascinating possibilities enabled by metamaterials is the strong reduction of the electromagnetic scattering from nanostructures. In dielectric nanoparticles, the formation of a minimal scattering state at specific wavelengths is associated with the excitation of photonic anapoles, which represent a peculiar type of radiationless state and whose existence has been demonstrated experimentally. In this work, we investigate the formation of anapole states in generic dielectric structures by applying a Fano-Feshbach projection scheme, a general technique widely used in the study of quantum mechanical open systems. By expressing the total scattering from the structure in terms of an orthogonal set of internal and external modes, defined in the interior and in the exterior of the dielectric structure, respectively, we show how anapole states are the result of a complex interaction among the resonances of the system and the surrounding environment. We apply our approach to a circular resonator, where we observe the formation of higher-order anapole states, which are originated by the superposition of several internal resonances of the system.
KAUST Department:
PRIMALIGHT Research Group
Citation:
Totero Gongora JS, Favraud G, Fratalocchi A (2017) Fundamental and high-order anapoles in all-dielectric metamaterials via Fano–Feshbach modes competition. Nanotechnology 28: 104001. Available: http://dx.doi.org/10.1088/1361-6528/aa593d.
Publisher:
IOP Publishing
Journal:
Nanotechnology
Issue Date:
1-Feb-2017
DOI:
10.1088/1361-6528/aa593d
Type:
Article
ISSN:
0957-4484; 1361-6528
Additional Links:
http://iopscience.iop.org/article/10.1088/1361-6528/aa593d/meta;jsessionid=106845CF98C266D8795D369681C1FC83.c1.iopscience.cld.iop.org
Appears in Collections:
Articles; PRIMALIGHT Research Group

Full metadata record

DC FieldValue Language
dc.contributor.authorGongora, J. S. Toteroen
dc.contributor.authorFavraud, Gaelen
dc.contributor.authorFratalocchi, Andreaen
dc.date.accessioned2017-02-15T08:32:15Z-
dc.date.available2017-02-15T08:32:15Z-
dc.date.issued2017-02-01en
dc.identifier.citationTotero Gongora JS, Favraud G, Fratalocchi A (2017) Fundamental and high-order anapoles in all-dielectric metamaterials via Fano–Feshbach modes competition. Nanotechnology 28: 104001. Available: http://dx.doi.org/10.1088/1361-6528/aa593d.en
dc.identifier.issn0957-4484en
dc.identifier.issn1361-6528en
dc.identifier.doi10.1088/1361-6528/aa593den
dc.identifier.urihttp://hdl.handle.net/10754/622894-
dc.description.abstractOne of the most fascinating possibilities enabled by metamaterials is the strong reduction of the electromagnetic scattering from nanostructures. In dielectric nanoparticles, the formation of a minimal scattering state at specific wavelengths is associated with the excitation of photonic anapoles, which represent a peculiar type of radiationless state and whose existence has been demonstrated experimentally. In this work, we investigate the formation of anapole states in generic dielectric structures by applying a Fano-Feshbach projection scheme, a general technique widely used in the study of quantum mechanical open systems. By expressing the total scattering from the structure in terms of an orthogonal set of internal and external modes, defined in the interior and in the exterior of the dielectric structure, respectively, we show how anapole states are the result of a complex interaction among the resonances of the system and the surrounding environment. We apply our approach to a circular resonator, where we observe the formation of higher-order anapole states, which are originated by the superposition of several internal resonances of the system.en
dc.publisherIOP Publishingen
dc.relation.urlhttp://iopscience.iop.org/article/10.1088/1361-6528/aa593d/meta;jsessionid=106845CF98C266D8795D369681C1FC83.c1.iopscience.cld.iop.orgen
dc.subjectFeshbach projectionen
dc.subjectanapole modesen
dc.subjectoptical invisibilityen
dc.subjectscattering theoryen
dc.subjecthigher-order anapolesen
dc.titleFundamental and high-order anapoles in all-dielectric metamaterials via Fano–Feshbach modes competitionen
dc.typeArticleen
dc.contributor.departmentPRIMALIGHT Research Groupen
dc.identifier.journalNanotechnologyen
kaust.authorGongora, J. S. Toteroen
kaust.authorFavraud, Gaelen
kaust.authorFratalocchi, Andreaen
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