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Related Experiment Video

Updated: Jun 30, 2025

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

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Published on: December 7, 2015

Correlation Measurements for Carbon Nanotubes with Quantum Defects.

Min-Ken Li^1,2, Simone Dehm³, Manfred M Kappes^1,3,4

¹Institute of Quantum Materials and Technologies, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany.

|March 21, 2024

Summary

Researchers developed electrically driven single-photon sources using functionalized carbon nanotubes. This breakthrough paves the way for on-chip quantum light emitters crucial for photonic quantum technology.

Keywords:

carbon nanotubes defects electroluminescence excitons graphene second-order correlation function measurement

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Published on: January 10, 2017

Area of Science:

Quantum physics
Materials science
Nanotechnology

Background:

Single-photon sources are fundamental for photonic quantum technology.
On-demand, electrically driven quantum-light emitters are critical for integrated photonic circuits.

Purpose of the Study:

To propose and demonstrate functionalized single-walled carbon nanotube field-effect transistors as a solid-state quantum-light source.
To achieve electrical excitation of single-photon emission.

Main Methods:

Formation of sp³ quantum defects on (7, 5) carbon nanotubes via 3,5-dichlorophenyl functionalization.
Integration of functionalized nanotubes with graphene electrodes to create field-effect transistors.
Measurement of second-order correlation function (g⁽²⁾(0)) using a Hanbury Brown and Twiss setup with filtered electroluminescent emission at 77 K.

Main Results:

Demonstration of photon antibunching, confirming single-photon emission from the functionalized carbon nanotubes.
Observation of single-photon emission via electrical excitation.
Analysis of the dependence of intensity correlation on electrical power and emission wavelength.

Conclusions:

Functionalized single-walled carbon nanotube field-effect transistors show promise as solid-state, electrically driven single-photon sources.
The study indicates a viable pathway toward achieving room-temperature, electrically triggered single-photon emission.
This work contributes to the development of on-chip quantum light sources for integrated photonic circuits.