Interacting polariton fluids in a monolayer of tungsten disulfide

Abstract

Atomically thin transition metal dichalcogenides (TMDs) possess a number of properties that make them attractive for realizing room-temperature polariton devices. An ideal platform for manipulating polariton fluids within monolayer TMDs is that of Bloch surface waves, which confine the electric field to a small volume near the surface of a dielectric mirror. Here we demonstrate that monolayer tungsten disulfide (${\text{WS}}_2$) can sustain Bloch surface wave polaritons (BSWPs) with a Rabi splitting of 43 meV and propagation constants reaching 33 $\mu$m. In addition, we evidence strong polariton-polariton nonlinearities within BSWPs, which manifest themselves as a reversible blueshift of the lower polariton resonance by up to 12.9$\pm$0.5 meV. Such nonlinearities are at the heart of polariton devices and have not yet been demonstrated in TMD polaritons. As a proof of concept, we use the nonlinearity to implement a nonlinear polariton source. Our results demonstrate that BSWPs using TMDs can support long-range propagation combined with strong nonlinearities, enabling potential applications in integrated optical processing and polaritonic circuits.

arXiv comment7 pages, 4 figures

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• Engineering photonic environments for two-dimensional materials
• Tunable optical nonlinearity for TMD polaritons dressed by a Fermi sea
• Van der Waals heterostructure metasurfaces: atomic-layer assembly of ultrathin optical cavities
• Centimeter-scale propagation of optical surface waves at visible wavelengths
• Polaritonic Quantum Matter
• Microscopic theory of exciton and trion polaritons in doped monolayers of transition metal dichalcogenides
• Light-induced topological superconductivity in transition metal dichalcogenide monolayers
• Interaction induced AC-Stark shift of exciton-polaron resonances
• Enhanced nonlinear interaction of polaritons via excitonic Rydberg states in monolayer WSe2
• High-Frequency Exciton-Polariton Clock Generator
• Interfacial anisotropic exciton-polariton manifolds in ReS${}_2$
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• Nonlinear optical response of resonantly driven polaron-polaritons
• Nonclassical Light from Exciton Interactions in a Two-Dimensional Quantum Mirror
• Superfluid flow of polaron polaritons above Landau's critical velocity
• Electrostatic control of nonlinear photonic-crystal polaritons in a monolayer semiconductor
• Exciton Delocalization Suppresses Polariton Scattering
• Disentangling enhanced diffusion and ballistic motion of excitons coupled to Bloch surface waves with molecular dynamics simulations
• Microscopic theory of nonlinear phase space filling in polaritonic lattices
• Microscopic theory of polariton-polariton interactions
• AC-Stark Spectroscopy of Interactions between Moiré Excitons and Polarons
• Strong Exciton-Photon Coupling in Large Area MoSe${}_2$ and WSe${}_2$ Heterostructures Fabricated from Two-Dimensional Materials Grown by Chemical Vapor Deposition
• Collective terahertz fluctuation modes in a polariton laser
• Quantization of Polaritons Confined in Dielectric Structures
• Valley-controlled many-body exciton interactions in monolayer WSe${}_2$ phototransistors
• Coupling Dynamics and Linear Polarization Phenomena in Codirectional Polariton Waveguide Couplers
• Planar Bragg microcavities with monolayer WS${}_2$ for strong exciton-photon coupling