SKM 2021 – wissenschaftliches Programm
CPP 1.3: Vortrag
Montag, 27. September 2021, 11:45–12:00, H3
Gate-Switchable Arrays of Quantum Light Emitters in Contacted Monolayer MoS2 van der Waals Heterodevices — •Alexander Hötger1,2, Julian Klein1,2,3,4, Katja Barthelmi1,3, Lukas Sigl1,2, Samuel Gyger5, Takashi Taniguchi6, Kenji Watanabe6, Val Zwiller5, Klaus D. Jöns5, Ursula Wurstbauer2,7, Jonathan Finley1,2,3, and Alexander Holleitner1,2,3 — 1Walter Schottky Institut, TU Munich — 2Exzellenzcluster e-conversion — 3Munich Center for Quantum Science and Technology — 4Massachusetts Institute of Technology, Cambridge — 5KTH Royal Institute of Technology, Dept. of Applied Physics — 6National Institute for Materials Science, Tsukuba — 7Institute of Physics, Westfälische Wilhelms-Universität Münster
Controlling single-photon emission on a few nanometers plays an important role for the scalability of future quantum photonic circuits. Moreover, it is highly relevant to facilitate a gate-switchable emission for quantum information schemes. By irradiating MoS2 with helium ions, we generate single-photon sources at ∼1.75 eV with a lateral position accuracy of only a few nanometers.  Second-order correlation measurements unambiguously proof the nature of single-photon emission. Charge doping of the monolayer MoS2 can be used for switching the quantum emission on and off.  This deterministic control of light emission in spatial and temporal means paves the way for new integrated quantum photonic technologies.
 J. Klein, L. Sigl et al., ACS Photonics 8, 2 (2021).
 A. Hötger et al., Nano Lett. 21, 2 (2021).