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Related Experiment Video

Updated: Jan 22, 2026

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Colloidal Synthesis of Nanopatch Antennas for Applications in Plasmonics and Nanophotonics

Published on: May 28, 2016

Quantum Light Funneling in Tailored Triangular Plasmonic Nanocavities.

Licheng Xiao^1,2, Yuxing Liu^1,2, Seyed Sepehr Mohajerani^1,2

¹Department of Physics, Stevens Institute of Technology, Hoboken, New Jersey 07030, United States.

|January 21, 2026

Summary

This summary is machine-generated.

We developed a novel triangular plasmonic cavity for quantum emitters, achieving precise light control and high photon flux. This breakthrough enables efficient, stable single-photon sources for quantum technologies.

Keywords:

WSe2 light funneling plasmonic nanocavities polarization-control quantum emitters

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Area of Science:

Quantum photonics
Materials science
Nanotechnology

Background:

Solid-state quantum emitters (QEs) are crucial for quantum photonic technologies.
Existing cavities struggle with nanoscale control, high photon flux, and polarization stability.

Purpose of the Study:

To develop a plasmonic cavity offering nanoscale spatial control, high photon flux, and polarization stability.
To integrate a triangular gap-plasmon cavity with monolayer WSe2 for deterministic quantum light funneling.

Main Methods:

Finite-element simulations to optimize cavity geometry (66 nm, 20° apex angle).
Fabrication of gold nanotriangles to couple strain fields with optical confinement.
Characterization of quantum emitter performance (g2(0), lifetime, saturation counts, polarization).

Main Results:

Optimal cavity design achieved Purcell enhancement near 750 nm.
Strain-induced QEs showed significant lifetime reduction (average 63-fold) and high saturation counts (126 MHz).
Consistent dipole alignment (±5°) and a tip-to-base enhancement ratio of 2.7 were observed.

Conclusions:

The triangular gap-plasmon cavity successfully integrates nanoscale control, high photon flux, and polarization stability.
This platform provides a scalable route toward on-chip, indistinguishable single-photon sources.
The study demonstrates deterministic quantum light funneling to sub-100 nm regions.