Cavity-control of interlayer excitons in van der Waals heterostructures

Michael Förg, Léo Colombier, Robin K. Patel, Jessica Lindlau, Aditya D. Mohite, Hisato Yamaguchi, Mikhail M. Glazov, David Hunger and Alexander Högele ()
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Michael Förg: Ludwig-Maximilians-Universität München
Léo Colombier: Ludwig-Maximilians-Universität München
Robin K. Patel: Ludwig-Maximilians-Universität München
Jessica Lindlau: Ludwig-Maximilians-Universität München
Aditya D. Mohite: Rice University
Hisato Yamaguchi: Los Alamos National Laboratory (LANL)
Mikhail M. Glazov: Ioffe Institute
David Hunger: Karlsruher Institut für Technologie
Alexander Högele: Ludwig-Maximilians-Universität München

Nature Communications, 2019, vol. 10, issue 1, 1-6

Abstract: Abstract Monolayer transition metal dichalcogenides integrated in optical microcavities host exciton-polaritons as a hallmark of the strong light-matter coupling regime. Analogous concepts for hybrid light-matter systems employing spatially indirect excitons with a permanent electric dipole moment in heterobilayer crystals promise realizations of exciton-polariton gases and condensates with inherent dipolar interactions. Here, we implement cavity-control of interlayer excitons in vertical MoSe2-WSe2 heterostructures. Our experiments demonstrate the Purcell effect for heterobilayer emission in cavity-modified photonic environments, and quantify the light-matter coupling strength of interlayer excitons. The results will facilitate further developments of dipolar exciton-polariton gases and condensates in hybrid cavity – van der Waals heterostructure systems.

Date: 2019
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DOI: 10.1038/s41467-019-11620-z

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