Influence of the asymmetric excited state decay on coherent population trapping

Abstract Electromagnetically induced transparency (EIT) is an optical phenomenon which allows a drastic modification of the optical properties of an atomic system by applying a control field. It has been largely studied in the last decades and nowadays we can find a huge number of experimental and t...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	H. S. Borges, M. H. Oliveira, C. J. Villas-Boas
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/08b58fec5c094d46a9bf0c3802b1ecea
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:08b58fec5c094d46a9bf0c3802b1ecea
record_format	dspace
spelling	oai:doaj.org-article:08b58fec5c094d46a9bf0c3802b1ecea2021-12-02T15:05:55ZInfluence of the asymmetric excited state decay on coherent population trapping10.1038/s41598-017-06755-22045-2322https://doaj.org/article/08b58fec5c094d46a9bf0c3802b1ecea2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06755-2https://doaj.org/toc/2045-2322Abstract Electromagnetically induced transparency (EIT) is an optical phenomenon which allows a drastic modification of the optical properties of an atomic system by applying a control field. It has been largely studied in the last decades and nowadays we can find a huge number of experimental and theoretical related studies. Recently a similar phenomenon was also shown in quantum dot molecules (QDM), where the control field is replaced by the tunneling rate between quantum dots. Our results show that in the EIT regime, the optical properties of QDM and the atomic system are identical. However, here we show that in the strong probe field regime, i.e., “coherent population trapping” (CPT) regime, it appears a strong discrepancy on the optical properties of both systems. We show that the origin of such difference relies on the different decay rates of the excited state of the two systems, implying in a strong difference on their higher order nonlinear susceptibilities. Finally, we investigate the optical response of atom/QDM strongly coupled to a cavity mode. In particular, the QDM-cavity system has the advantage of allowing a better narrowing of the width of the dark state resonance in the CPT regime when compared with atom-cavity system.H. S. BorgesM. H. OliveiraC. J. Villas-BoasNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q H. S. Borges M. H. Oliveira C. J. Villas-Boas Influence of the asymmetric excited state decay on coherent population trapping
description	Abstract Electromagnetically induced transparency (EIT) is an optical phenomenon which allows a drastic modification of the optical properties of an atomic system by applying a control field. It has been largely studied in the last decades and nowadays we can find a huge number of experimental and theoretical related studies. Recently a similar phenomenon was also shown in quantum dot molecules (QDM), where the control field is replaced by the tunneling rate between quantum dots. Our results show that in the EIT regime, the optical properties of QDM and the atomic system are identical. However, here we show that in the strong probe field regime, i.e., “coherent population trapping” (CPT) regime, it appears a strong discrepancy on the optical properties of both systems. We show that the origin of such difference relies on the different decay rates of the excited state of the two systems, implying in a strong difference on their higher order nonlinear susceptibilities. Finally, we investigate the optical response of atom/QDM strongly coupled to a cavity mode. In particular, the QDM-cavity system has the advantage of allowing a better narrowing of the width of the dark state resonance in the CPT regime when compared with atom-cavity system.
format	article
author	H. S. Borges M. H. Oliveira C. J. Villas-Boas
author_facet	H. S. Borges M. H. Oliveira C. J. Villas-Boas
author_sort	H. S. Borges
title	Influence of the asymmetric excited state decay on coherent population trapping
title_short	Influence of the asymmetric excited state decay on coherent population trapping
title_full	Influence of the asymmetric excited state decay on coherent population trapping
title_fullStr	Influence of the asymmetric excited state decay on coherent population trapping
title_full_unstemmed	Influence of the asymmetric excited state decay on coherent population trapping
title_sort	influence of the asymmetric excited state decay on coherent population trapping
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/08b58fec5c094d46a9bf0c3802b1ecea
work_keys_str_mv	AT hsborges influenceoftheasymmetricexcitedstatedecayoncoherentpopulationtrapping AT mholiveira influenceoftheasymmetricexcitedstatedecayoncoherentpopulationtrapping AT cjvillasboas influenceoftheasymmetricexcitedstatedecayoncoherentpopulationtrapping
_version_	1718388623214116864

Influence of the asymmetric excited state decay on coherent population trapping

Ejemplares similares