Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices

Light escape from an optical waveguide side-coupled to a waveguide lattice provides a photonic analogue of the spontaneous emission process of an excited two-level atom in a one-dimensional array of cavities. According to the Fermi golden rule, the decay process is prevented when the atomic resonanc...

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Detalles Bibliográficos
Autor: Longhi, Stefano
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/229298
Acceso en línea:http://hdl.handle.net/10261/229298
Access Level:acceso abierto
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spelling Chiral excitation and effective bandwidth enhancement in tilted waveguide latticesLonghi, StefanoLight escape from an optical waveguide side-coupled to a waveguide lattice provides a photonic analogue of the spontaneous emission process of an excited two-level atom in a one-dimensional array of cavities. According to the Fermi golden rule, the decay process is prevented when the atomic resonance frequency falls in a stop band of the lattice, while time-reversal symmetry ensures that the spontaneously emitted photon has equal probability to propagate in opposite directions of the array. This scenario is drastically modified when the quantum emitter drifts along the lattice. In the waveguide optics analogue, the atomic drift is emulated by the introduction of a slight geometric tilt of the waveguide axis from the lattice axis. In this setting, light excitation in the array is chiral, i.e., light propagates in a preferred direction of the lattice, and coupling is allowed even though the waveguide is far detuned from the tight-binding lattice band.Optical Society of AmericaConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2021202120202021info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/229298reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://doi.org/10.1364/OL.412440https://arxiv.org/abs/2011.11529Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2292982026-05-22T06:33:51Z
dc.title.none.fl_str_mv Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices
title Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices
spellingShingle Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices
Longhi, Stefano
title_short Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices
title_full Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices
title_fullStr Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices
title_full_unstemmed Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices
title_sort Chiral excitation and effective bandwidth enhancement in tilted waveguide lattices
dc.creator.none.fl_str_mv Longhi, Stefano
author Longhi, Stefano
author_facet Longhi, Stefano
author_role author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description Light escape from an optical waveguide side-coupled to a waveguide lattice provides a photonic analogue of the spontaneous emission process of an excited two-level atom in a one-dimensional array of cavities. According to the Fermi golden rule, the decay process is prevented when the atomic resonance frequency falls in a stop band of the lattice, while time-reversal symmetry ensures that the spontaneously emitted photon has equal probability to propagate in opposite directions of the array. This scenario is drastically modified when the quantum emitter drifts along the lattice. In the waveguide optics analogue, the atomic drift is emulated by the introduction of a slight geometric tilt of the waveguide axis from the lattice axis. In this setting, light excitation in the array is chiral, i.e., light propagates in a preferred direction of the lattice, and coupling is allowed even though the waveguide is far detuned from the tight-binding lattice band.
publishDate 2020
dc.date.none.fl_str_mv 2020
2021
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/229298
url http://hdl.handle.net/10261/229298
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://doi.org/10.1364/OL.412440
https://arxiv.org/abs/2011.11529
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Optical Society of America
publisher.none.fl_str_mv Optical Society of America
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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