Enhanced nonlinear characteristics with the assistance of a $$\mathscr{PT}$$ 𝒫𝒯 -symmetric trimer system

Enhanced nonlinear characteristics with the assistance of a $$\mathscr{PT}$$ 𝒫𝒯 -symmetric trimer system

Abstract We study the parity-time (PT) symmetry characteristics and the applications to nonlinear optics in an optical trimer system consisting of two indirectly coupled standing-mode micro-cavities and a two-level quantum emitter (QE) placed at the intersection of two cavities. We find this trimer...

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Autores principales: Lei Du, Yan Zhang, Chu-Hui Fan, Yi-Mou Liu, Feng Gao, Jin-Hui Wu
Formato: article
Lenguaje:EN
Publicado: Nature Portfolio 2018
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Acceso en línea:https://doaj.org/article/3877d8539a474067af9d6cde62927426
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spelling oai:doaj.org-article:3877d8539a474067af9d6cde629274262021-12-02T15:08:50ZEnhanced nonlinear characteristics with the assistance of a $$\mathscr{PT}$$ 𝒫𝒯 -symmetric trimer system10.1038/s41598-018-21137-y2045-2322https://doaj.org/article/3877d8539a474067af9d6cde629274262018-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-21137-yhttps://doaj.org/toc/2045-2322Abstract We study the parity-time (PT) symmetry characteristics and the applications to nonlinear optics in an optical trimer system consisting of two indirectly coupled standing-mode micro-cavities and a two-level quantum emitter (QE) placed at the intersection of two cavities. We find this trimer system can exhibit analogical phenomena as those in typical $$\mathscr{PT}$$ 𝒫𝒯 -symmetric dimer systems composed of a passive cavity directly coupled to an active cavity. This system, whose $$\mathscr{PT}$$ 𝒫𝒯 symmetry is demonstrated by our analytic results, can be transformed between the $$\mathscr{PT}$$ 𝒫𝒯 -symmetric phase and the $$\mathscr{PT}$$ 𝒫𝒯 -broken phase by adjusting relevant system parameters. Then, with this system, we observe both the linear and nonlinear parts of the transmission field become remarkably enhanced and can further reach peak values around the $$\mathscr{PT}$$ 𝒫𝒯 breaking point. In addition, we show the negative correlation between the gain degree of the linear (nonlinear) transmission part and decay rate of the QE. This trimer proposal is feasible for experiments and may provide a promising platform for $$\mathscr{PT}$$ 𝒫𝒯 -symmetric optics of low-light levels. Moreover, novel phenomena arising from the QE-cavity-coupling induced nonlinearity gain could be explored to fabricate photonic devices and controllable nonlinear optical media for quantum information process and communication of photons.Lei DuYan ZhangChu-Hui FanYi-Mou LiuFeng GaoJin-Hui WuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-8 (2018)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Lei Du
Yan Zhang
Chu-Hui Fan
Yi-Mou Liu
Feng Gao
Jin-Hui Wu
Enhanced nonlinear characteristics with the assistance of a $$\mathscr{PT}$$ 𝒫𝒯 -symmetric trimer system
description Abstract We study the parity-time (PT) symmetry characteristics and the applications to nonlinear optics in an optical trimer system consisting of two indirectly coupled standing-mode micro-cavities and a two-level quantum emitter (QE) placed at the intersection of two cavities. We find this trimer system can exhibit analogical phenomena as those in typical $$\mathscr{PT}$$ 𝒫𝒯 -symmetric dimer systems composed of a passive cavity directly coupled to an active cavity. This system, whose $$\mathscr{PT}$$ 𝒫𝒯 symmetry is demonstrated by our analytic results, can be transformed between the $$\mathscr{PT}$$ 𝒫𝒯 -symmetric phase and the $$\mathscr{PT}$$ 𝒫𝒯 -broken phase by adjusting relevant system parameters. Then, with this system, we observe both the linear and nonlinear parts of the transmission field become remarkably enhanced and can further reach peak values around the $$\mathscr{PT}$$ 𝒫𝒯 breaking point. In addition, we show the negative correlation between the gain degree of the linear (nonlinear) transmission part and decay rate of the QE. This trimer proposal is feasible for experiments and may provide a promising platform for $$\mathscr{PT}$$ 𝒫𝒯 -symmetric optics of low-light levels. Moreover, novel phenomena arising from the QE-cavity-coupling induced nonlinearity gain could be explored to fabricate photonic devices and controllable nonlinear optical media for quantum information process and communication of photons.
format article
author Lei Du
Yan Zhang
Chu-Hui Fan
Yi-Mou Liu
Feng Gao
Jin-Hui Wu
author_facet Lei Du
Yan Zhang
Chu-Hui Fan
Yi-Mou Liu
Feng Gao
Jin-Hui Wu
author_sort Lei Du
title Enhanced nonlinear characteristics with the assistance of a $$\mathscr{PT}$$ 𝒫𝒯 -symmetric trimer system
title_short Enhanced nonlinear characteristics with the assistance of a $$\mathscr{PT}$$ 𝒫𝒯 -symmetric trimer system
title_full Enhanced nonlinear characteristics with the assistance of a $$\mathscr{PT}$$ 𝒫𝒯 -symmetric trimer system
title_fullStr Enhanced nonlinear characteristics with the assistance of a $$\mathscr{PT}$$ 𝒫𝒯 -symmetric trimer system
title_full_unstemmed Enhanced nonlinear characteristics with the assistance of a $$\mathscr{PT}$$ 𝒫𝒯 -symmetric trimer system
title_sort enhanced nonlinear characteristics with the assistance of a $$\mathscr{pt}$$ 𝒫𝒯 -symmetric trimer system
publisher Nature Portfolio
publishDate 2018
url https://doaj.org/article/3877d8539a474067af9d6cde62927426
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AT yimouliu enhancednonlinearcharacteristicswiththeassistanceofamathscrptptsymmetrictrimersystem
AT fenggao enhancednonlinearcharacteristicswiththeassistanceofamathscrptptsymmetrictrimersystem
AT jinhuiwu enhancednonlinearcharacteristicswiththeassistanceofamathscrptptsymmetrictrimersystem
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