Nature Communications (Nov 2021)

Spatial coherence of room-temperature monolayer WSe2 exciton-polaritons in a trap

  • Hangyong Shan,
  • Lukas Lackner,
  • Bo Han,
  • Evgeny Sedov,
  • Christoph Rupprecht,
  • Heiko Knopf,
  • Falk Eilenberger,
  • Johannes Beierlein,
  • Nils Kunte,
  • Martin Esmann,
  • Kentaro Yumigeta,
  • Kenji Watanabe,
  • Takashi Taniguchi,
  • Sebastian Klembt,
  • Sven Höfling,
  • Alexey V. Kavokin,
  • Sefaattin Tongay,
  • Christian Schneider,
  • Carlos Antón-Solanas

DOI
https://doi.org/10.1038/s41467-021-26715-9
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 7

Abstract

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Here, the authors show that the interaction between microcavity photons and excitons in an atomically thin WSe2 results in a hybridized regime of strong light-matter coupling. Coherence build-up is accompanied by a threshold-like behaviour of the emitted light intensity, which is a fingerprint of a polariton laser effect.