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Bo Han; Jamie M. Fitzgerald; Lukas Lackner; Roberto Rosati; Martin Esmann; Falk Eilenberger; Takashi Taniguchi; Kenji Watanabe; Marcin Syperek; Ermin Malic; Christian Schneider

doi:10.1103/physrevlett.134.076902

ジャーナル論文 Infrared Magnetopolaritons in ${MoTe}_{2}$ Monolayers and Bilayers

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Bo Han, Jamie M. Fitzgerald, Lukas Lackner, Roberto Rosati, Martin Esmann, Falk Eilenberger, Takashi Taniguchi, Kenji Watanabe, Marcin Syperek, Ermin Malic, Christian Schneider. Infrared Magnetopolaritons in

{MoTe}_{2}

Monolayers and Bilayers. Physical Review Letters. 2025, 134 (7), 076902. https://doi.org/10.1103/physrevlett.134.076902

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MoTe2 monolayers and bilayers are unique within the family of van-der-Waals materials since they pave the way towards atomically thin infrared light-matter quantum interfaces, potentially reaching the important telecommunication windows. Here, we report emergent exciton-polaritons based on MoTe2 monolayer and bilayer in a low-temperature open micro-cavity in a joint experiment- theory study. Our experiments clearly evidence both the enhanced oscillator strength and enhanced luminescence of MoTe2 bilayers, signified by a 38 % increase of the Rabi-splitting and a strongly enhanced relaxation of polaritons to low-energy states. The latter is distinct from polaritons in MoTe2 monolayers, which feature a bottleneck-like relaxation inhibition. Both the polaritonic spin- valley locking in monolayers and the spin-layer locking in bilayers are revealed via the Zeeman effect, which we map and control via the light-matter composition of our polaritonic resonances.

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