We discuss coupling of site-selectively induced quantum emitters in exfoliated monolayers of WSe2 to plasmonic nanostructures. Squared and rectangular gold nanopillars, which are arranged in pitches of \SI{4}{\micro\meter} on the surface, have sizes of tens of nanometers, and act as seeds for the formation of quantum emitters in the atomically thin materials. We observe chraracteristic 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, indicating deterministic 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 plasmonics applications.
@article{arxiv.1806.06363,
title = {Deterministic coupling of quantum emitters in WSe$_2$ monolayers to plasmonic nanocavities},
author = {Oliver Iff and Nils Lundt and Simon Betzold and Laxmi Narayan Tripathi and Monika Emmerling and Young Jin Lee and Soon-Hong Kwon and Sven Höfling and Christian Schneider},
journal= {arXiv preprint arXiv:1806.06363},
year = {2018}
}