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Related Experiment Video

Updated: Jun 28, 2026

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Utilization of Plasmonic and Photonic Crystal Nanostructures for Enhanced Micro- and Nanoparticle Manipulation

Published on: September 27, 2011

Enhanced Light-Matter Interaction with Bloch Surface Wave Modulated Plasmonic Nanocavities.

Bowen Fu¹, Wenshuo Dai¹, Longlong Yang¹

¹State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, 100871 Beijing, China.

|January 3, 2025

Summary

Researchers achieved strong coupling between light and matter using a novel hybrid nanocavity. This breakthrough significantly enhances light-matter interaction for single excitons in transition metal dichalcogenides (TMDs) at room temperature.

Keywords:

Bloch surface wave hybrid polaritons plasmonic nanocavity strong coupling two-dimensional transition metal dichalcogenides

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Last Updated: Jun 28, 2026

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Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

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Published on: July 21, 2018

Area of Science:

Quantum optics
Materials science
Nanotechnology

Background:

Strong coupling in cavity quantum electrodynamics is crucial for fundamental research.
Achieving strong coupling requires high light confinement, minimal mode volume, and controlled electric field orientation.
Existing systems face limitations in coupling strength and the number of excitons involved.

Purpose of the Study:

To develop a hybrid nanocavity system for enhanced light-matter interaction at room temperature.
To achieve strong coupling between excitons in transition metal dichalcogenides (TMDs) and cavity modes.
To minimize the number of excitons required for strong coupling and maximize the effective coupling strength per exciton.

Main Methods:

Fabrication of a hybrid nanocavity combining a 1D photonic crystal cavity and a plasmonic nanocavity.
Utilizing Bloch surface waves to control the electric field direction and enhance light confinement.
Integrating a monolayer of tungsten diselenide (WSe2) within the hybrid nanocavity.

Main Results:

The hybrid nanocavity demonstrated improved quality factor and reduced mode volume.
A significant Rabi splitting of approximately 186 meV was achieved.
Strong coupling was observed with as few as 8 excitons, the lowest reported for TMDs.
An effective coupling strength per exciton of 17.6 meV was obtained, nearly doubling previous records.

Conclusions:

The developed hybrid nanocavity system enables efficient strong coupling at room temperature.
This work significantly advances cavity quantum electrodynamics studies with 2D materials.
The enhanced coupling strength and reduced exciton requirement pave the way for novel quantum devices.