Regensburg 2022 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 24: 2D Materials 5 (joint session HL/CPP/DS)
CPP 24.6: Talk
Wednesday, September 7, 2022, 11:00–11:15, H36
Tunable exciton-polaritons emerging from WS2 monolayer excitons in a photonic lattice at room temperature — •Lukas Lackner1, Marco Dusel2, Oleg Egorov3, Bo Han1, Heiko Knopf3, Falk Eilenberger3, Carlos Anton-Solanas1, Sven Höfling2, and Christian Schneider1 — 1University of Oldenburg, Oldenburg, Germany — 2University of Würzburg, Würzburg, Germany — 3Friedrich Schiller University Jena, Jena, Germany
The engineering of non-linear light-matter states in optical lattices has emerged as a key research strategy for the exploration of Hamiltonians in the spirit of ultrafast- and possibly quantum-simulation. It furthermore has revealed its potential to probe non-trivial topology phenomena. Excitons in atomically thin crystals have emerged as an ideal active medium for such purposes, since they couple strongly with light, and bear the potential to harness giant non-linearities and interactions.
In this work, we present an experiment conducted at room temperature in an open optical cavity of high quality, with an implemented one-dimensional photonic lattice. In our present work we integrate an atomically thin layer of WS2 in such a device. We discuss the emergence and tunability of a lattice-band-structure in the tight-binding configuration at room temperature, fuelled by the emission from monolayer excitons[1].
References
[1] L. Lackner et al., Nat Commun 12, 4933 (2021).