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Related Experiment Video

Updated: Feb 8, 2026

Transport of Surface-modified Carbon Nanotubes through a Soil Column

Transport of Surface-modified Carbon Nanotubes through a Soil Column

Published on: April 2, 2015

Carbon nanotubes as emerging quantum-light sources.

X He¹, H Htoon¹, S K Doorn¹

¹Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM, USA.

Nature Materials

|June 20, 2018

Summary

Chemically engineered semiconducting single-wall carbon nanotubes (SWCNTs) show promise as efficient, room-temperature, single-photon sources. Advances in SWCNT optical properties are paving the way for integrated quantum photonic devices.

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Last Updated: Feb 8, 2026

Transport of Surface-modified Carbon Nanotubes through a Soil Column

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Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

Published on: July 2, 2012

Area of Science:

Quantum optics
Materials science
Nanotechnology

Background:

Efficient, electrically triggered, single-photon sources are crucial for quantum computing and cryptography.
Semiconducting single-wall carbon nanotubes (SWCNTs) possess desirable optical properties but suffer from low quantum yield and instability.

Purpose of the Study:

To review recent advancements in controlling SWCNT optical properties for quantum light source applications.
To highlight progress in single-photon purity, generation efficiency, and indistinguishability.

Main Methods:

Chemical functionalization of SWCNTs to enhance optical properties.
Electrical contacting techniques for device integration.
Resonator coupling strategies to improve light extraction and coherence.

Main Results:

Demonstrated improvements in single-photon purity and generation efficiency.
Achieved enhanced indistinguishability of photons emitted by SWCNTs.
Overcoming challenges related to spectral diffusion and blinking.

Conclusions:

Mastering SWCNT optical properties through chemistry and device engineering is advancing their use as quantum light sources.
SWCNT-based chip-integrated quantum photonic sources are a promising future direction.
Further research is needed to address fundamental challenges and optimize performance.