Deterministic coupling of quantum emitters in WSe2 monolayers to plasmonic nanocavities
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We discuss coupling of site-selectively induced quantum emitters in exfoliated monolayers of WSe2 to plasmonic nanostructures. Gold nanorods of 20 nm-240 nm size, which are arranged in pitches of a few micrometers on a dielectric surface, act as seeds for the formation of quantum emitters in the atomically thin materials. We observe characteristic narrow-band emission signals from the monolayers, which correspond well with the positions of the metallic nanopillars with and without thin dielectric coating. Single photon emission from the emitters is confirmed by autocorrelation measurements, yielding g2(τ = 0) values as low as 0.17. Moreover, we observe a strong co-polarization of our single photon emitters with the frequency matched plasmonic resonances, as a consequence of light-matter coupling. Our work represents a significant step towards the scalable implementation of coupled quantum emitter-resonator systems for highly integrated quantum photonic and plasmonic applications.
Iff , O , Lundt , N , Betzold , S , Tripathi , L N , Emmerling , M , Tongay , S , Lee , Y J , Kwon , S H , Höfling , S & Schneider , C 2018 , ' Deterministic coupling of quantum emitters in WSe 2 monolayers to plasmonic nanocavities ' , Optics Express , vol. 26 , no. 20 , pp. 25944-25951 . https://doi.org/10.1364/OE.26.025944
Copyright © 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://doi.org/10.1364/OE.26.025944
DescriptionFunding: State of Bavaria, European Research Council [with the project unLiMIt2D (679228)]; National Research Foundation of Korea, Korean Government Grant (NRF-2016R1C1B2007007); National Science Foundation (DMR-1552220[, DMR-1838443]).
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