Nonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation

Abstract We propose a scheme for nonreciprocal light propagation in two coupled cavities system, in which a two-level quantum emitter is coupled to one of the optical microcavities. For the case of parity-time ( $${\mathscr{P}}{\mathscr{T}}$$ P T ) symmetric system (i.e., coupled active-passive cavi...

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Autores principales:	Anshou Zheng, Guangyong Zhang, Hongyun Chen, Tingting Mei, Jibing Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/df1e9a06f66d45dfbff62931b39998dc
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spelling	oai:doaj.org-article:df1e9a06f66d45dfbff62931b39998dc2021-12-02T15:05:33ZNonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation10.1038/s41598-017-14397-72045-2322https://doaj.org/article/df1e9a06f66d45dfbff62931b39998dc2017-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-14397-7https://doaj.org/toc/2045-2322Abstract We propose a scheme for nonreciprocal light propagation in two coupled cavities system, in which a two-level quantum emitter is coupled to one of the optical microcavities. For the case of parity-time ( $${\mathscr{P}}{\mathscr{T}}$$ P T ) symmetric system (i.e., coupled active-passive cavities system), the cavity gain can significantly enhance the optical nonlinearity induced by the interaction between a quantum emitter and cavity field beyond weak-excitation approximation. The increased optical nonlinearity results in the non-lossy nonreciprocal light propagation with high isolation ratio in proper parameters range. In addition, our calculations show that nonreciprocal light propagation will not be affected by the unstable output field intensity caused by optical bistability, and we can even switch directions of nonreciprocal light propagation by appropriately adjusting the system parameters.Anshou ZhengGuangyong ZhangHongyun ChenTingting MeiJibing LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Anshou Zheng Guangyong Zhang Hongyun Chen Tingting Mei Jibing Liu Nonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation
description	Abstract We propose a scheme for nonreciprocal light propagation in two coupled cavities system, in which a two-level quantum emitter is coupled to one of the optical microcavities. For the case of parity-time ( $${\mathscr{P}}{\mathscr{T}}$$ P T ) symmetric system (i.e., coupled active-passive cavities system), the cavity gain can significantly enhance the optical nonlinearity induced by the interaction between a quantum emitter and cavity field beyond weak-excitation approximation. The increased optical nonlinearity results in the non-lossy nonreciprocal light propagation with high isolation ratio in proper parameters range. In addition, our calculations show that nonreciprocal light propagation will not be affected by the unstable output field intensity caused by optical bistability, and we can even switch directions of nonreciprocal light propagation by appropriately adjusting the system parameters.
format	article
author	Anshou Zheng Guangyong Zhang Hongyun Chen Tingting Mei Jibing Liu
author_facet	Anshou Zheng Guangyong Zhang Hongyun Chen Tingting Mei Jibing Liu
author_sort	Anshou Zheng
title	Nonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation
title_short	Nonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation
title_full	Nonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation
title_fullStr	Nonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation
title_full_unstemmed	Nonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation
title_sort	nonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/df1e9a06f66d45dfbff62931b39998dc
work_keys_str_mv	AT anshouzheng nonreciprocallightpropagationincoupledmicrocavitiessystembeyondweakexcitationapproximation AT guangyongzhang nonreciprocallightpropagationincoupledmicrocavitiessystembeyondweakexcitationapproximation AT hongyunchen nonreciprocallightpropagationincoupledmicrocavitiessystembeyondweakexcitationapproximation AT tingtingmei nonreciprocallightpropagationincoupledmicrocavitiessystembeyondweakexcitationapproximation AT jibingliu nonreciprocallightpropagationincoupledmicrocavitiessystembeyondweakexcitationapproximation
_version_	1718388798481498112

Nonreciprocal light propagation in coupled microcavities system beyond weak-excitation approximation

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