Generalized superradiant assembly for nanophotonic thermal emitters

Sudaraka Mallawaarachchi, Sarath D. Gunapala, Mark I. Stockman, Malin Premaratne

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Superradiance explains the collective enhancement of emission, observed when nanophotonic emitters are arranged within subwavelength proximity and perfect symmetry. Thermal superradiant emitter assemblies with variable photon far-field coupling rates are known to be capable of outperforming their conventional, nonsuperradiant counterparts. However, due to the inability to account for assemblies comprising emitters with various materials and dimensional configurations, existing thermal superradiant models are inadequate and incongruent. In this paper, a generalized thermal superradiant assembly for nanophotonic emitters is developed from first principles. Spectral analysis shows that not only does the proposed model outperform existing models in power delivery, but also portrays unforeseen and startling characteristics during emission. These electromagnetically induced transparency like (EIT-like) and superscattering-like characteristics are reported here for a superradiant assembly, and the effects escalate as the emitters become increasingly disparate. The fact that the EIT-like characteristics are in close agreement with a recent experimental observation involving the superradiant decay of qubits strongly bolsters the validity of the proposed model.

Original languageEnglish
Article number125406
Number of pages10
JournalPhysical Review B
Volume97
Issue number12
DOIs
Publication statusPublished - 8 Mar 2018

Cite this

Mallawaarachchi, Sudaraka ; Gunapala, Sarath D. ; Stockman, Mark I. ; Premaratne, Malin. / Generalized superradiant assembly for nanophotonic thermal emitters. In: Physical Review B. 2018 ; Vol. 97, No. 12.
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Generalized superradiant assembly for nanophotonic thermal emitters. / Mallawaarachchi, Sudaraka; Gunapala, Sarath D.; Stockman, Mark I.; Premaratne, Malin.

In: Physical Review B, Vol. 97, No. 12, 125406, 08.03.2018.

Research output: Contribution to journalArticleResearchpeer-review

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