Room-temperature Tamm-plasmon exciton-polaritons with a WSe2 monolayer

Nils Lundt (), Sebastian Klembt, Evgeniia Cherotchenko, Simon Betzold, Oliver Iff, Anton V. Nalitov, Martin Klaas, Christof P. Dietrich, Alexey V. Kavokin, Sven Höfling and Christian Schneider ()
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Nils Lundt: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
Sebastian Klembt: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
Evgeniia Cherotchenko: Physics and Astronomy School, University of Southampton
Simon Betzold: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
Oliver Iff: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
Anton V. Nalitov: Physics and Astronomy School, University of Southampton
Martin Klaas: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
Christof P. Dietrich: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
Alexey V. Kavokin: Physics and Astronomy School, University of Southampton
Sven Höfling: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg
Christian Schneider: Technische Physik and Wilhelm-Conrad-Röntgen Research Center for Complex Material Systems, Universität Würzburg

Nature Communications, 2016, vol. 7, issue 1, 1-6

Abstract: 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.

Date: 2016
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DOI: 10.1038/ncomms13328

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