Regensburg 2019 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 34: Two-dimensional Materials III (joint session HL/CPP)

CPP 34.10: 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 Hoefling^1,3, and Christian Schneider¹ — ¹Technische 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.