Nonperturbative decay dynamics in metamaterial waveguides

Liberal, I; Ziolkowski, RW

Nonperturbative decay dynamics in metamaterial waveguides

Liberal, I Ziolkowski, RW

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Publisher:: American Institute of Physics
Publication Type:: Journal Article
Citation:: Applied Physics Letters, 2021, 118, (11), pp. 1-11
Issue Date:: 2021-03-15

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Field	Value	Language
dc.contributor.author	Liberal, I
dc.contributor.author	Ziolkowski, RW
dc.date.accessioned	2022-05-13T03:37:51Z
dc.date.available	2022-05-13T03:37:51Z
dc.date.issued	2021-03-15
dc.identifier.citation	Applied Physics Letters, 2021, 118, (11), pp. 1-11
dc.identifier.issn	0003-6951
dc.identifier.issn	1077-3118
dc.identifier.uri	http://hdl.handle.net/10453/157318
dc.description.abstract	In this work, we investigate the nonperturbative decay dynamics of a quantum emitter coupled to a composite right-/left-handed transmission line. Our theory captures the contributions from the different spectral features of the waveguide, providing an accurate prediction beyond the weak coupling regime and illustrating the multiple possibilities offered by the nontrivial dispersion of metamaterial waveguides. We show that the waveguide is characterized by a bandgap with two asymmetric edges: (i) a mu-near-zero band edge, where spontaneous emission is inhibited and an unstable pole is smoothly transformed into a bound state, and (ii) an epsilon-near-zero band edge, where the decay rate diverges and unstable and real (bound state) poles coexist. In both cases, branch cut singularities contribute with fractional decay dynamics whose nature depends on the properties of the band edges.
dc.language	English
dc.publisher	American Institute of Physics
dc.relation.ispartof	Applied Physics Letters
dc.relation.isbasedon	10.1063/5.0044103
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	02 Physical Sciences, 09 Engineering, 10 Technology
dc.subject.classification	Applied Physics
dc.title	Nonperturbative decay dynamics in metamaterial waveguides
dc.type	Journal Article
utslib.citation.volume	118
utslib.for	02 Physical Sciences
utslib.for	09 Engineering
utslib.for	10 Technology
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	open_access	*
pubs.consider-herdc	false
dc.date.updated	2022-05-13T03:37:49Z
pubs.issue	11
pubs.publication-status	Published
pubs.volume	118
utslib.citation.issue	11

Abstract:

In this work, we investigate the nonperturbative decay dynamics of a quantum emitter coupled to a composite right-/left-handed transmission line. Our theory captures the contributions from the different spectral features of the waveguide, providing an accurate prediction beyond the weak coupling regime and illustrating the multiple possibilities offered by the nontrivial dispersion of metamaterial waveguides. We show that the waveguide is characterized by a bandgap with two asymmetric edges: (i) a mu-near-zero band edge, where spontaneous emission is inhibited and an unstable pole is smoothly transformed into a bound state, and (ii) an epsilon-near-zero band edge, where the decay rate diverges and unstable and real (bound state) poles coexist. In both cases, branch cut singularities contribute with fractional decay dynamics whose nature depends on the properties of the band edges.

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http://hdl.handle.net/10453/157318