Electrically tunable strong light-matter coupling in a transition metal dichalcogenide monolayer embedded in a plasmonic crystal cavity

ORAL

Abstract

Two-dimensional transition-metal dichalcogenide (TMDC) monolayers exhibit direct bandgap excitons with large binding energy. The optical response of TMDCs is electrically tunable over a broad wavelength range, making these 2D materials promising candidates for optoelectronic devices. In this work, we enhance exciton-plasmon coupling by embedding a single layer of tungsten diselenide (WSe2) into a plasmonic crystal cavity, which confines surface plasmon polaritons in an analogous manner to photonic crystal cavities. We observe strong light--matter interactions and the formation of microcavity polaritons when the cavity mode is on resonance with the exciton absorption in WSe2. Using the electrostatically controllable response of such excitons, we also demonstrate tunable vacuum Rabi splitting in such a system.

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Authors

  • Giovanni Scuri

    Harvard University, department of Physics, Harvard University, Department of Physics, Harvard University, Harvard University, Department of Physics

  • You Zhou

    Harvard University, department of Physics, Harvard University, Department of Physics, Department of Chemistry and Chemical Biology, Harvard University, Harvard University, Department of Physics

  • Alexander High

    Department of Physics, Harvard University, Harvard University, Department of Physics

  • Alan Dibos

    Harvard University, School of Engineering and Applied Sciences, Harvard University, Harvard University, John A. Paulson School of Engineering and Applied Sciences

  • Kristiaan De Greve

    Harvard University, department of Physics, Department of Physics, Harvard University, Harvard University, Department of Physics

  • Mark Polking

    Harvard University, Harvard University, Department of Chemistry and Chemical Biology

  • Luis Juaregui

    Harvard University, Harvard University, Physics Department, Harvard University, Department of Physics

  • Dominik Wild

    Harvard University, Department of Physics

  • Andrew Joe

    Harvard University, Harvard University, Physics Department, Harvard University, Department of Physics

  • Kateryna Pistunova

    Harvard University, Harvard University, Department of Physics

  • Mikhail Lukin

    Harvard University, Harvard University, department of Physics, Department of Physics, Harvard University, Harvard University, Department of Physics

  • P. Kim

    Harvard University, Department of Physics, Harvard University, Department of Physics, Harvard University, Cambridge, MA 02138, US, Harvard University, department of Physics, Harvard University, Department of Physics, Department of Physics, Harvard University, Cambridge, MA, 02138, Department of Physics, Harvard University, Cambridge, MA 02138

  • Hongkun Park

    Harvard University, department of Chemistry, Department of Physics, Department of Chemistry and Chemical Biology, Harvard University, Harvard University, Department of Physics and Department of Chemistry and Chemical Biology