Year: 2025
Type: article
Abstract: MoTe_{2} monolayers and bilayers are unique within the family of van der Waals materials since they pave the way toward atomically thin infrared light-matter quantum interfaces, potentially reaching the important telecommunication windows. Here, we report emergent exciton polaritons based on MoTe_{2} monolayers and bilayers in a low-temperature open microcavity in a joint experiment-theory study. Our experiments clearly evidence both the enhanced oscillator strength and enhanced luminescence of MoTe_{2} 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 MoTe_{2} monolayers, which feature a bottlenecklike 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.
Source: Physical Review Letters
Institutions: Carl von Ossietzky Universität Oldenburg, Philipps University of Marburg, Max Planck Society, Fraunhofer Institute for Applied Optics and Precision Engineering, Max Planck School of Photonics, Friedrich Schiller University Jena, National Institute for Materials Science, Wrocław University of Science and Technology
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,750
Awards: G1501896880, G1544390775, G2442584775, G3420992565, G4162329948, 2D Nanomaterialien für die Nanoskopie der Zukunft (NanoScopeFutur-2D), G4806815962, Optik, Dynamik und Transport von ExzitonPolaritonen in atomar dünnen Halbleitern, G8605805955, Verbundprojekt: Ein quantengesichertes Campusnetzwerk basierend auf sub-Poissonschen Quantenlichtquellen - tubLAN_Q0 -, Teilvorhaben: Ein Quantennetzwerk auf dem Campus der TU Berlin, G888546621, G898758523
OpenAlex ID: W4407770017