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Related Experiment Video

Updated: Feb 22, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

Electrically driven single-photon emission from an isolated single molecule.

Li Zhang¹, Yun-Jie Yu¹, Liu-Guo Chen¹

¹Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui, 230026, China.

Nature Communications

|September 20, 2017

Summary

This summary is machine-generated.

Researchers achieved electrically driven single-photon emission from a single molecule. This breakthrough overcomes challenges in molecular light emitters, paving the way for advanced single-photon sources.

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Last Updated: Feb 22, 2026

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Area of Science:

Quantum Optics
Molecular Photonics
Nanotechnology

Background:

Electrically driven molecular light emitters show potential for single-photon sources.
Challenges include fluorescence quenching and demonstrating emission from isolated single molecules.

Purpose of the Study:

To demonstrate electrically driven single-photon emission from a single molecule.
To overcome fluorescence quenching and technical hurdles in molecular light emission.

Main Methods:

Utilizing a scanning tunneling microscope with a precisely controlled nanocavity.
Employing electronic decoupling via an ultrathin dielectric spacer.
Leveraging resonant plasmonic nanocavity for emission enhancement.

Main Results:

Achieved intense and stable single-molecule electroluminescence.
Confirmed single-photon emission nature via second-order photon correlation measurements (g(2)(0)=0.09).
Demonstrated an ultrahigh-density array of identical single-photon emitters.

Conclusions:

Successfully demonstrated electrically driven single-photon emission from a single molecule.
Overcame quenching and enhanced emission using nanocavity plasmonics.
Established a method for creating dense arrays of single-photon emitters.