Dressed emitters as impurities

Dressed states forming when quantum emitters or atoms couple to a photonic bath underpin a number of phenomena and applications, in particular nonradiating effective interactions occurring within photonic bandgaps. Here, we present a compact formulation of the resolvent-based theory for calculating...

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Autores principales:	Leonforte Luca, Valenti Davide, Spagnolo Bernardo, Carollo Angelo, Ciccarello Francesco
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	photonic band-gap materials quantum optics waveguide-qed Physics QC1-999
Acceso en línea:	https://doaj.org/article/bfe61aaba6654a7dac97c5d8857b8465
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id	oai:doaj.org-article:bfe61aaba6654a7dac97c5d8857b8465
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spelling	oai:doaj.org-article:bfe61aaba6654a7dac97c5d8857b84652021-12-05T14:10:56ZDressed emitters as impurities2192-861410.1515/nanoph-2021-0490https://doaj.org/article/bfe61aaba6654a7dac97c5d8857b84652021-11-01T00:00:00Zhttps://doi.org/10.1515/nanoph-2021-0490https://doaj.org/toc/2192-8614Dressed states forming when quantum emitters or atoms couple to a photonic bath underpin a number of phenomena and applications, in particular nonradiating effective interactions occurring within photonic bandgaps. Here, we present a compact formulation of the resolvent-based theory for calculating atom-photon dressed states built on the idea that the atom behaves as an effective impurity. This establishes an explicit connection with the standard impurity problem in condensed matter. Moreover, it allows us to formulate and settle – independently of the bath Hamiltonian – a number of properties previously known only for specific models or not entirely formalized. The framework is next extended to the case of more than one emitter, which is used to derive a general expression of dissipationless effective Hamiltonians explicitly featuring the overlap of single-emitter dressed bound states.Leonforte LucaValenti DavideSpagnolo BernardoCarollo AngeloCiccarello FrancescoDe Gruyterarticlephotonic band-gap materialsquantum opticswaveguide-qedPhysicsQC1-999ENNanophotonics, Vol 10, Iss 17, Pp 4251-4259 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	photonic band-gap materials quantum optics waveguide-qed Physics QC1-999
spellingShingle	photonic band-gap materials quantum optics waveguide-qed Physics QC1-999 Leonforte Luca Valenti Davide Spagnolo Bernardo Carollo Angelo Ciccarello Francesco Dressed emitters as impurities
description	Dressed states forming when quantum emitters or atoms couple to a photonic bath underpin a number of phenomena and applications, in particular nonradiating effective interactions occurring within photonic bandgaps. Here, we present a compact formulation of the resolvent-based theory for calculating atom-photon dressed states built on the idea that the atom behaves as an effective impurity. This establishes an explicit connection with the standard impurity problem in condensed matter. Moreover, it allows us to formulate and settle – independently of the bath Hamiltonian – a number of properties previously known only for specific models or not entirely formalized. The framework is next extended to the case of more than one emitter, which is used to derive a general expression of dissipationless effective Hamiltonians explicitly featuring the overlap of single-emitter dressed bound states.
format	article
author	Leonforte Luca Valenti Davide Spagnolo Bernardo Carollo Angelo Ciccarello Francesco
author_facet	Leonforte Luca Valenti Davide Spagnolo Bernardo Carollo Angelo Ciccarello Francesco
author_sort	Leonforte Luca
title	Dressed emitters as impurities
title_short	Dressed emitters as impurities
title_full	Dressed emitters as impurities
title_fullStr	Dressed emitters as impurities
title_full_unstemmed	Dressed emitters as impurities
title_sort	dressed emitters as impurities
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/bfe61aaba6654a7dac97c5d8857b8465
work_keys_str_mv	AT leonforteluca dressedemittersasimpurities AT valentidavide dressedemittersasimpurities AT spagnolobernardo dressedemittersasimpurities AT carolloangelo dressedemittersasimpurities AT ciccarellofrancesco dressedemittersasimpurities
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Dressed emitters as impurities

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