Berlin 2018 – scientific programme

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DS: Fachverband Dünne Schichten

DS 37: 2D Materials: Session III (joint session DS/CPP/HL)

DS 37.8: Talk

Friday, March 16, 2018, 11:45–12:00, H 2032

Deterministic Positioning of Single-Photon Emitters in Monolayer WSe₂ on the Nanoscale — •Johannes Kern¹, Iris Niehues¹, Philipp Tonndorf¹, Robert Schmidt¹, Daniel Wigger², Robert Schneider¹, Torsten Stiehm¹, Steffen Michaelis de Vasconcellos¹, Doris E. Reiter², Tilman Kuhn², and Rudolf Bratschitsch¹ — ¹Institute of Physics and Center for Nanotechnology, University of Münster, Germany — ²Institute of Solid State Theory, University of Münster, Germany

Single-photon emitters are an important building block for photonic quantum technology. Here, we deterministically position single-photon emitters in monolayer WSe₂ on the nanoscale [1]. The atomically thin semiconductor is placed on top of a gapped single-crystalline gold rod which results in a folding of the monolayer around the metal nano-structure. At the gap position, local strain is induced in the atomically thin semiconductor. Excitons localize there and radiatively decay via single-photon emission.

[1] J. Kern et al., "Nanoscale positioning of single-photon emitters in atomically thin WSe2", Adv. Mater. 28, 7101-7105, (2016).