Cavity-control of bright and dark interlayer excitons in van der Waals heterostructures

Abstract

Monolayer (ML) transition metal dichalcogenides (TMDs) integrated in optical microcavities host exciton-polaritons as a hallmark of the strong light-matter coupling regime. Analogous concepts for hybrid light-matter systems employing spatially indirect excitons with a permanent electric dipole moment in heterobilayer (HBL) crystals promise realizations of exciton-polariton gases and condensates with immanent dipolar interactions. Here, we identify optical signatures of spatially indirect momentum-bright and momentum-dark interlayer excitons in vertical MoSe${}_2$-WSe${}_2$ heterostructures and implement cavity-control of both exciton manifolds. Our experiments quantify the strength of light-matter coupling for both zero and finite momentum excitons residing in Moiré superlattices of TMD HBLs and demonstrate that both exciton species are susceptible to Purcell enhancement in cavity-modified photonic environments. Our results form the basis for further developments of dipolar exciton-polariton gases and condensates in hybrid cavity -- van der Waals heterostructure systems.

References in corpus (17)

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• Measurement of the optical dielectric function of transition metal dichalcogenide monolayers: MoS2, MoSe2, WS2 and WSe2
• Strong light-matter coupling in two-dimensional atomic crystals
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• Fiber Fabry-Perot cavity with high finesse
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• Two-dimensional semiconductors in the regime of strong light-matter coupling
• Theory of optical absorption by interlayer excitons in transition metal dichalcogenide heterobilayers
• Control of interlayer excitons in two-dimensional van der Waals heterostructures
• Interlayer exciton dynamics in a dichalcogenide monolayer heterostructure
• Brightened spin-triplet interlayer excitons and optical selection rules in van der Waals heterobilayers
• Direct exciton emission from atomically thin transition metal dichalcogenide heterostructures near the lifetime limit
• Microsecond dark-exciton valley polarization memory in 2D heterostructures
• The role of momentum-dark excitons in the elementary optical response of bilayer WSe${}_2$

Cited by in corpus (32)

• Enhanced Light-Matter Interaction in Two-Dimensional Transition Metal Dichalcogenides
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• Excitons in mesoscopically reconstructed moiré heterostructures
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• The Free Electron Gas in Cavity Quantum Electrodynamics
• Polaritonic Hofstadter Butterfly and Cavity-Control of the Quantized Hall Conductance
• Twist Angle Tuning of Moiré Exciton Polaritons in van der Waals Heterostructures
• Coupling interlayer excitons to whispering gallery modes in van der Waals heterostructures
• Light-matter interaction in van der Waals heterostructures
• Dynamic polarization of electron spins interacting with nuclei in semiconductor nanostructures
• A doping-dependent switch from one- to two-component superfluidity at temperature above 100K in coupled electron-hole Van der Waals heterostructures
• Fast Fabrication of WS2/Bi2Se3 Heterostructures for High Performance Photodetection
• Leaky exciton condensates in transition metal dichalcogenide moiré bilayers
• Electrically tunable topological transport of moiré polaritons
• Lattice reconstruction in MoSe${}_2$-WSe${}_2$ heterobilayers synthesized by chemical vapor deposition
• Long-lived Topological Flatband Excitons in Semiconductor Moiré Heterostructures: a Bosonic Kane-Mele Model Platform
• Cavity Induced Collective Behavior in the Polaritonic Ground State
• Cavity exciton-polaritons in two-dimensional semiconductors from first principles
• Interlayer excitonic spectra of vertically stacked MoSe${}_2$/WSe${}_2$ heterobilayers
• Interlayer exciton polaritons in homobilayers of transition metal dichalcogenides
• Electromagnetic field assisted exciton diffusion in moiré superlattices
• Dynamic Valley Polarization in Moire Quantum Dots
• Two dimensional semiconductors: optical and electronic properties
• Microsphere-coupled light emission control of van der Waals heterostructures
• Ultra-Sensitive Extinction Measurements of Optically Active Defects in Monolayer MoS${}_2$
• Resonant laser excitation and time-domain imaging of chiral topological polariton edge states
• Light-matter interactions in layered materials and heterostructures: from moiré physics and magneto-optical effects to ultrafast dynamics and hybrid meta-photonics
• Theory of phonon sidebands in the absorption spectra of moiré exciton-polaritons
• Intersubband electric dipole spin resonance in transition metal dichalcogenide heterobilayers
• Open-cavity in closed-cycle cryostat as a quantum optics platform
• Quantum Dot in a Hybrid Structure with Dipolar Excitons
• Robust Interlayer Exciton Interplay in Twisted van der Waals Heterotrilayer on a Broadband Bragg Reflector up to Room Temperature