Complete Electromagnetic Dyadic Green Function Characterization in a Complex Environment—Resonant Dipole-Dipole Interaction and Cooperative Effects

The Green function completely encapsulates a system’s linear response to external sources, and plays a central role in optics, electromagnetism, and acoustics. In electromagnetism, a broad range of phenomena are connected to the Green function, including the local density of optical states, superrad...

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Autores principales:	Kaizad Rustomji, Marc Dubois, Pierre Jomin, Stefan Enoch, Jérôme Wenger, C. Martijn de Sterke, Redha Abdeddaim
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/b469a2bb92b4402c95a42d62566256f6
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spelling	oai:doaj.org-article:b469a2bb92b4402c95a42d62566256f62021-12-02T14:25:33ZComplete Electromagnetic Dyadic Green Function Characterization in a Complex Environment—Resonant Dipole-Dipole Interaction and Cooperative Effects10.1103/PhysRevX.11.0210042160-3308https://doaj.org/article/b469a2bb92b4402c95a42d62566256f62021-04-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.11.021004http://doi.org/10.1103/PhysRevX.11.021004https://doaj.org/toc/2160-3308The Green function completely encapsulates a system’s linear response to external sources, and plays a central role in optics, electromagnetism, and acoustics. In electromagnetism, a broad range of phenomena are connected to the Green function, including the local density of optical states, superradiance, and the cooperative Lamb shift. Therefore, knowing the Green function is important for progress in fields as diverse as cavity quantum electrodynamics, plasmonics, metamaterials, and photovoltaics. However, experimentally characterizing the full complex Green function is challenging, as it requires amplitude and phase sensitive measurements with deep-subwavelength spatial resolution. Here, we report a method to characterize the full complex Green function with a resolution of λ/100 by measuring the mutual impedance between two dipoles at microwave frequencies. We apply it to a resonant planar cavity, with both parallel and nonparallel sides, and also explore the effects of modal resonances in a dielectric cube on dipole-dipole interactions. The ability to characterize the Green function with high spatial resolution provides a unique way to investigate cooperative effects in complex photonic systems.Kaizad RustomjiMarc DuboisPierre JominStefan EnochJérôme WengerC. Martijn de SterkeRedha AbdeddaimAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 11, Iss 2, p 021004 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Kaizad Rustomji Marc Dubois Pierre Jomin Stefan Enoch Jérôme Wenger C. Martijn de Sterke Redha Abdeddaim Complete Electromagnetic Dyadic Green Function Characterization in a Complex Environment—Resonant Dipole-Dipole Interaction and Cooperative Effects
description	The Green function completely encapsulates a system’s linear response to external sources, and plays a central role in optics, electromagnetism, and acoustics. In electromagnetism, a broad range of phenomena are connected to the Green function, including the local density of optical states, superradiance, and the cooperative Lamb shift. Therefore, knowing the Green function is important for progress in fields as diverse as cavity quantum electrodynamics, plasmonics, metamaterials, and photovoltaics. However, experimentally characterizing the full complex Green function is challenging, as it requires amplitude and phase sensitive measurements with deep-subwavelength spatial resolution. Here, we report a method to characterize the full complex Green function with a resolution of λ/100 by measuring the mutual impedance between two dipoles at microwave frequencies. We apply it to a resonant planar cavity, with both parallel and nonparallel sides, and also explore the effects of modal resonances in a dielectric cube on dipole-dipole interactions. The ability to characterize the Green function with high spatial resolution provides a unique way to investigate cooperative effects in complex photonic systems.
format	article
author	Kaizad Rustomji Marc Dubois Pierre Jomin Stefan Enoch Jérôme Wenger C. Martijn de Sterke Redha Abdeddaim
author_facet	Kaizad Rustomji Marc Dubois Pierre Jomin Stefan Enoch Jérôme Wenger C. Martijn de Sterke Redha Abdeddaim
author_sort	Kaizad Rustomji
title	Complete Electromagnetic Dyadic Green Function Characterization in a Complex Environment—Resonant Dipole-Dipole Interaction and Cooperative Effects
title_short	Complete Electromagnetic Dyadic Green Function Characterization in a Complex Environment—Resonant Dipole-Dipole Interaction and Cooperative Effects
title_full	Complete Electromagnetic Dyadic Green Function Characterization in a Complex Environment—Resonant Dipole-Dipole Interaction and Cooperative Effects
title_fullStr	Complete Electromagnetic Dyadic Green Function Characterization in a Complex Environment—Resonant Dipole-Dipole Interaction and Cooperative Effects
title_full_unstemmed	Complete Electromagnetic Dyadic Green Function Characterization in a Complex Environment—Resonant Dipole-Dipole Interaction and Cooperative Effects
title_sort	complete electromagnetic dyadic green function characterization in a complex environment—resonant dipole-dipole interaction and cooperative effects
publisher	American Physical Society
publishDate	2021
url	https://doaj.org/article/b469a2bb92b4402c95a42d62566256f6
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Complete Electromagnetic Dyadic Green Function Characterization in a Complex Environment—Resonant Dipole-Dipole Interaction and Cooperative Effects

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