A single-crystalline silver plasmonic circuit for visible quantum emitters

Abstract

Plasmonic waveguides are key elements in nanophotonic devices serving as optical interconnects between nanoscale light sources and detectors. Multimode operation in plasmonic two-wire transmission lines promises important degrees of freedom for near-field manipulation and information encoding. However, highly confined plasmon propagation in gold nanostructures is typically limited to the near-infrared region due to ohmic losses, excluding all visible quantum emitters from plasmonic circuitry. Here, we report on top-down fabrication of complex plasmonic nanostructures in single-crystalline silver plates. We demonstrate controlled remote excitation of a small ensemble of fluorophores by a set of waveguide modes and emission of the visible luminescence into the waveguide with high efficiency. This approach opens up the study of nanoscale light-matter interaction between complex plasmonic waveguides and a large variety of quantum emitters available in the visible spectral range.

References in corpus (11)

• Atomically flat single-crystalline gold nanostructures for plasmonic nanocircuitry
• Coupling of individual quantum emitters to channel plasmons
• Near-to-far field transformations for radiative and guided waves
• Finite element modeling of spontaneous emission of a quantum emitter at nanoscale proximity to plasmonic waveguides
• On-chip excitation of single germanium-vacancies in nanodiamonds embedded in plasmonic waveguides
• Coupling single photons from discrete quantum emitters in WSe${}_2$ to lithographically defined plasmonic slot-waveguides
• On-chip detection of spin-selective routing in plasmonic nanocircuits
• Multimode plasmon excitation and in-situ analysis in top-down fabricated plasmonic nanocircuits
• Design and Characterization of Plasmonic Doppler Grating for Azimuthal Angle-resolved Surface Plasmon Resonances
• Designing plasmonic eigenstates for optical signal transmission in planar channel devices
• Propagation of plasmons in designed single crystalline silver nanostructures

Cited by in corpus (4)

• On-Chip Spin-Orbit Controlled Excitation of Quantum Emitters Coupled to Hybrid Plasmonic Nanocircuits
• Near unity Raman $\beta$-factor of surface enhanced Raman scattering in a waveguide
• Single Molecule Nonlinearity in a Plasmonic Waveguide
• Interferometric near-field characterization of plasmonic slot waveguides in single- and poly-crystalline gold films