Deterministic coupling of quantum emitters in WSe${}_2$ monolayers to plasmonic nanocavities

Abstract

We discuss coupling of site-selectively induced quantum emitters in exfoliated monolayers of WSe${}_2$ to plasmonic nanostructures. Squared and rectangular gold nanopillars, which are arranged in pitches of \SI{4}{\micro\meter} on the surface, have sizes of tens of nanometers, and act as seeds for the formation of quantum emitters in the atomically thin materials. We observe chraracteristic narrow-band emission signals from the monolayers, which correspond well with the positions of the metallic nanopillars with and without thin dielectric coating. Single photon emission from the emitters is confirmed by autocorrelation measurements, yielding $g^2(\tau =0)$ values as low as 0.17. Moreover, we observe a strong co-polarization of our single photon emitters with the frequency matched plasmonic resonances, indicating deterministic light-matter coupling. Our work represents a significant step towards the scalable implementation of coupled quantum emitter-resonator systems for highly integrated quantum photonic and plasmonics applications.

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Cited by in corpus (9)

• Integration of Single Photon Emitters in 2D Layered Materials with a Silicon Nitride Photonic Chip
• Space-compatible cavity-enhanced single-photon generation with hexagonal boron nitride
• Strain-tunable Single Photon Sources in WSe2 Monolayers
• Purcell-enhanced single photon source based on a deterministically placed WSe${}_2$ monolayer quantum dot in a circular Bragg grating cavity
• Integrated Single Photon Emitters
• Coupling Quantum Emitters in WSe2 Monolayers to a Metal-Insulator-Metal Waveguide
• Tailoring Polarization in WSe${}_2$ Quantum Emitters through Deterministic Strain Engineering
• Creation and Microscopic Origins of Single-Photon Emitters in Transition Metal Dichalcogenides and Hexagonal Boron Nitride
• Origin of selective enhancement of sharp defect emission lines in monolayer WSe${}_2$ on rough metal substrate