Compounding Plasmon–Exciton Strong Coupling System with Gold Nanofilm to Boost Rabi Splitting
Various plasmonic nanocavities possessing an extremely small mode volume have been developed and applied successfully in the study of strong light-matter coupling. Driven by the desire of constructing quantum networks and other functional quantum devices, a growing trend of strong coupling research...
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doaj-4c68fdd00b2e46e6a625a6c9e11658f02020-11-25T01:56:26ZengMDPI AGNanomaterials2079-49912019-04-019456410.3390/nano9040564nano9040564Compounding Plasmon–Exciton Strong Coupling System with Gold Nanofilm to Boost Rabi SplittingTingting Song0Zhanxu Chen1Wenbo Zhang2Limin Lin3Yanjun Bao4Lin Wu5Zhang-Kai Zhou6State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-sen University, Guangzhou 510275, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-sen University, Guangzhou 510275, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-sen University, Guangzhou 510275, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-sen University, Guangzhou 510275, ChinaState Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-sen University, Guangzhou 510275, ChinaInstitute of High Performance Computing, A*STAR (Agency for Science, Technology and Research), 1 Fusionopolis Way, Connexis, Singapore 138632, SingaporeState Key Laboratory of Optoelectronic Materials and Technologies, School of Physics, Sun Yat-sen University, Guangzhou 510275, ChinaVarious plasmonic nanocavities possessing an extremely small mode volume have been developed and applied successfully in the study of strong light-matter coupling. Driven by the desire of constructing quantum networks and other functional quantum devices, a growing trend of strong coupling research is to explore the possibility of fabricating simple strong coupling nanosystems as the building blocks to construct complex systems or devices. Herein, we investigate such a nanocube-exciton building block (i.e. AuNC@J-agg), which is fabricated by coating Au nanocubes with excitonic J-aggregate molecules. The extinction spectra of AuNC@J-agg assembly, as well as the dark field scattering spectra of the individual nanocube-exciton, exhibit Rabi splitting of 100–140 meV, which signifies strong plasmon–exciton coupling. We further demonstrate the feasibility of constructing a more complex system of AuNC@J-agg on Au film, which achieves a much stronger coupling, with Rabi splitting of 377 meV. This work provides a practical pathway of building complex systems from building blocks, which are simple strong coupling systems, which lays the foundation for exploring further fundamental studies or inventing novel quantum devices.https://www.mdpi.com/2079-4991/9/4/564plasmonicsnanoparticlesplasmon–exciton strong couplingnanoscale building block |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tingting Song Zhanxu Chen Wenbo Zhang Limin Lin Yanjun Bao Lin Wu Zhang-Kai Zhou |
spellingShingle |
Tingting Song Zhanxu Chen Wenbo Zhang Limin Lin Yanjun Bao Lin Wu Zhang-Kai Zhou Compounding Plasmon–Exciton Strong Coupling System with Gold Nanofilm to Boost Rabi Splitting Nanomaterials plasmonics nanoparticles plasmon–exciton strong coupling nanoscale building block |
author_facet |
Tingting Song Zhanxu Chen Wenbo Zhang Limin Lin Yanjun Bao Lin Wu Zhang-Kai Zhou |
author_sort |
Tingting Song |
title |
Compounding Plasmon–Exciton Strong Coupling System with Gold Nanofilm to Boost Rabi Splitting |
title_short |
Compounding Plasmon–Exciton Strong Coupling System with Gold Nanofilm to Boost Rabi Splitting |
title_full |
Compounding Plasmon–Exciton Strong Coupling System with Gold Nanofilm to Boost Rabi Splitting |
title_fullStr |
Compounding Plasmon–Exciton Strong Coupling System with Gold Nanofilm to Boost Rabi Splitting |
title_full_unstemmed |
Compounding Plasmon–Exciton Strong Coupling System with Gold Nanofilm to Boost Rabi Splitting |
title_sort |
compounding plasmon–exciton strong coupling system with gold nanofilm to boost rabi splitting |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2019-04-01 |
description |
Various plasmonic nanocavities possessing an extremely small mode volume have been developed and applied successfully in the study of strong light-matter coupling. Driven by the desire of constructing quantum networks and other functional quantum devices, a growing trend of strong coupling research is to explore the possibility of fabricating simple strong coupling nanosystems as the building blocks to construct complex systems or devices. Herein, we investigate such a nanocube-exciton building block (i.e. AuNC@J-agg), which is fabricated by coating Au nanocubes with excitonic J-aggregate molecules. The extinction spectra of AuNC@J-agg assembly, as well as the dark field scattering spectra of the individual nanocube-exciton, exhibit Rabi splitting of 100–140 meV, which signifies strong plasmon–exciton coupling. We further demonstrate the feasibility of constructing a more complex system of AuNC@J-agg on Au film, which achieves a much stronger coupling, with Rabi splitting of 377 meV. This work provides a practical pathway of building complex systems from building blocks, which are simple strong coupling systems, which lays the foundation for exploring further fundamental studies or inventing novel quantum devices. |
topic |
plasmonics nanoparticles plasmon–exciton strong coupling nanoscale building block |
url |
https://www.mdpi.com/2079-4991/9/4/564 |
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