WFRF:(Tang Jianwei)
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Selective far-field addressing of coupled quantum dots in a plasmonic nanocavity
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- Tang, Jianwei (author)
- Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Natl Engn Res Ctr Opt Instrumentat,JORCEP,Coll Op, Hangzhou 310058, Zhejiang, Peoples R China.
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- Xia, Juan (author)
- Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Natl Engn Res Ctr Opt Instrumentat,JORCEP,Coll Op, Hangzhou 310058, Zhejiang, Peoples R China.
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- Fang, Maodong (author)
- South China Normal Univ, South China Acad Adv Optoelect, Ctr Opt & Electromagnet Res, ZJU SCNU Joint Ctr Photon, Guangzhou 510006, Guangdong, Peoples R China.
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- Zhejiang Univ, Ctr Opt & Electromagnet Res, State Key Lab Modern Opt Instrumentat, Natl Engn Res Ctr Opt Instrumentat,JORCEP,Coll Op, Hangzhou 310058, Zhejiang, Peoples R China South China Normal Univ, South China Acad Adv Optoelect, Ctr Opt & Electromagnet Res, ZJU SCNU Joint Ctr Photon, Guangzhou 510006, Guangdong, Peoples R China. (creator_code:org_t)
- 2018-04-27
- 2018
- English.
- In: Nature Communications. - : NATURE PUBLISHING GROUP. - 2041-1723. ; 9
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Plasmon-emitter hybrid nanocavity systems exhibit strong plasmon-exciton interactions at the single-emitter level, showing great potential as testbeds and building blocks for quantum optics and informatics. However, reported experiments involve only one addressable emitting site, which limits their relevance for many fundamental questions and devices involving interactions among emitters. Here we open up this critical degree of freedom by demonstrating selective far-field excitation and detection of two coupled quantum dot emitters in a U-shaped gold nanostructure. The gold nanostructure functions as a nanocavity to enhance emitter interactions and a nanoantenna to make the emitters selectively excitable and detectable. When we selectively excite or detect either emitter, we observe photon emission predominantly from the target emitter with up to 132-fold Purcell-enhanced emission rate, indicating individual addressability and strong plasmon-exciton interactions. Our work represents a step towards a broad class of plasmonic devices that will enable faster, more compact optics, communication and computation.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Tang, Jianwei
- Xia, Juan
- Fang, Maodong
- Bao, Fanglin
- Cao, Guanjun
- Shen, Jianqi
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- Evans, Julian
- He, Sailing
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