Tunable exciton-polaritons emerging from WS2 monolayer excitons in a photonic lattice at room temperature

Lackner, L.; Dusel, M.; Egorov, O. A.; Han, B.; Knopf, H.; Eilenberger, F.; Schröder, S.; Watanabe, K.; Taniguchi, T.; Tongay, S.; Anton-Solanas, C.; Höfling, S.; Schneider, C.

doi:10.1038/s41467-021-24925-9

Title: Tunable exciton-polaritons emerging from WS₂ monolayer excitons in a photonic lattice at room temperature

Journal Article · 15 August 2021 · Nature Communications

DOI: https://doi.org/10.1038/s41467-021-24925-9 · OSTI ID:1853660

^[1]; Dusel, M. ^[2];

^[3]; Han, B. ^[4]; Knopf, H. ^[5];

^[5]; Schröder, S. ^[6];

^[7];

^[8]; Anton-Solanas, C. ^[4];

^[2]; Schneider, C. ^[9]

Univ. of Wurzburg (Germany); Carl von Ossietzky Univ., Oldenburg (Germany); Universität Würzburg (Germany)
Univ. of Wurzburg (Germany)
Friedrich Schiller Univ., Jena (Germany)
Carl von Ossietzky Univ., Oldenburg (Germany)
Friedrich Schiller Univ., Jena (Germany); Fraunhofer-Institute for Applied Optics and Precision Engineering, Jena (Germany); Max Planck School of Photonics, Jena (Germany)
Fraunhofer-Institute for Applied Optics and Precision Engineering, Jena (Germany)
National Institute for Materials Science, Tsukuba (Japan)
Arizona State Univ., Tempe, AZ (United States)
Univ. of Wurzburg (Germany); Carl von Ossietzky Univ., Oldenburg (Germany)

Engineering non-linear hybrid light-matter states in tailored lattices is a central research strategy for the simulation of complex Hamiltonians. Excitons in atomically thin crystals are an ideal active medium for such purposes, since they couple strongly with light and bear the potential to harness giant non-linearities and interactions while presenting a simple sample-processing and room temperature operability. We demonstrate lattice polaritons, based on an open, high-quality optical cavity, with an imprinted photonic lattice strongly coupled to excitons in a WS₂ monolayer. We experimentally observe the emergence of the canonical band-structure of particles in a one-dimensional lattice at room temperature, and demonstrate frequency reconfigurability over a spectral window exceeding 85 meV, as well as the systematic variation of the nearest-neighbour coupling, reflected by a tunability in the bandwidth of the p-band polaritons by 7 meV. The technology presented in this work is a critical demonstration towards reconfigurable photonic emulators operated with non-linear photonic fluids, offering a simple experimental implementation and working at ambient conditions.

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Research Organization:: Arizona State Univ., Tempe, AZ (United States); Univ. of Wurzburg (Germany)

Sponsoring Organization:: European Research Council; Federal Ministry of Education and Science of Germany; German Research Foundation (DFG); JSPS Kakenhi; MEXT, Japan; National Science Foundation (NSF); USDOE Office of Science (SC)

Grant/Contract Number:: SC0020653

OSTI ID:: 1853660

Journal Information:: Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 12; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Tunable exciton-polaritons emerging from WS2 monolayer excitons in a photonic lattice at room temperature

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Title: Tunable exciton-polaritons emerging from WS₂ monolayer excitons in a photonic lattice at room temperature