title: Room-temperature Tamm-plasmon exciton-polaritons with a WSe2monolayer.
abstract: Solid-state cavity quantum electrodynamics is a rapidly advancing field, which explores the frontiers of light-matter coupling. Metal-based approaches are of particular interest in this field, as they carry the potential to squeeze optical modes to spaces significantly below the diffraction limit. Transition metal dichalcogenides are ideally suited as the active material in cavity quantum electrodynamics, as they interact strongly with light at the ultimate monolayer limit. Here, we implement a Tamm-plasmon-polariton structure and study the coupling to a monolayer of WSe2, hosting highly stable excitons. Exciton-polariton formation at room temperature is manifested in the characteristic energy-momentum dispersion relation studied in photoluminescence, featuring an anti-crossing between the exciton and photon modes with a Rabi-splitting of 23.5 meV. Creating polaritonic quasiparticles in monolithic, compact architectures with atomic monolayers under ambient conditions is a crucial step towards the exploration of nonlinearities, macroscopic coherence and advanced spinor physics with novel, low-mass bosons.
authors: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
authors: Nils
authors: N
authors: Lundt
authors: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
authors: Sebastian
authors: S
authors: Klembt
authors: Physics and Astronomy School, University of Southampton, Highfield, Southampton SO171BJ, UK.
authors: Evgeniia
authors: E
authors: Cherotchenko
authors: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
authors: Simon
authors: S
authors: Betzold
authors: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
authors: Oliver
authors: O
authors: Iff
authors: Physics and Astronomy School, University of Southampton, Highfield, Southampton SO171BJ, UK.
authors: Anton V
authors: AV
authors: Nalitov
authors: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
authors: Martin
authors: M
authors: Klaas
authors: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
authors: Christof P
authors: CP
authors: Dietrich
authors: Physics and Astronomy School, University of Southampton, Highfield, Southampton SO171BJ, UK.|SPIN-CNR, Viale del Politecnico 1, I-00133 Rome, Italy.
authors: Alexey V
authors: AV
authors: Kavokin
authors: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.|SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY 16 9SS, UK.
authors: Sven
authors: S
authors: Höfling
authors: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany.
authors: Christian
authors: C
authors: Schneider