Regensburg 2019 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 27: Two-dimensional Materials III (joint session HL/CPP)

HL 27.10: Vortrag

Mittwoch, 3. April 2019, 12:00–12:15, H36

Plasmonic Coupling and Engineering of Single Photon Emitters in WSe2 Monolayers — •Oliver Iff1, Nils Lundt1, Simon Betzold1, Łukasz Dusanowski1, Magdalena Moczała-Dusanowska1, Laxmi Narayan Tripathi1, Young Jin Lee2, Soon-Hong Kwon2, Sven Hoefling1,3, and Christian Schneider11Technische Physik, Universität Würzburg, Wuerzburg, Germany — 2Department of Physics, Chung-Ang University, Seoul, South Korea — 3SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, UK

Single photon sources are an important building block in quantum technologies. The rediscovery of transition metal dichalcogenides this century revealed the availability of quantum emitters in monolayers of WSe2 or MoSe2. Here, we investigate the resonant coupling of such emitters to metallic nanostructures of different shapes and sizes. Auto correlation measurements prove their single photon emission as well as lifetime measurements unveil a reduction in their decay times, confirming the coupling between the metal surface and the quantum emitters. Furthermore, by utilizing an array of gold nanopillars as well as strain-engineering and -tuning of monolayers, site-controlled positioning of localized emitters is possible and represents an important step towards their reproducible manipulation. These findings demonstrate the potential of transition metal dichalcogenide based, strain engineered devices for quantum electrodynamic systems.

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