Photon Antibunching in the Photoluminescence Spectra of a Single Carbon Nanotube

Details Photon Antibunching in the Photoluminescence Spectra of a Single Carbon Nanotube Photon Antibunching in the Photoluminescence Spectra of a Single Carbon Nanotube

2007-07-13

arxiv.org/abs/0707.1923v3

Phys. Rev. Lett. 100, 217401 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

content as published

Scientific paper

10.1103/PhysRevLett.100.217401

We report the first observation of photon antibunching in the photoluminescence from single carbon nanotubes. The emergence of a fast luminescence decay component under strong optical excitation indicates that Auger processes are partially responsible for inhibiting two-photon generation. Additionally, the presence of exciton localization at low temperatures ensures that nanotubes emit photons predominantly one by one. The fact that multiphoton emission probability can be smaller than 5% suggests that carbon nanotubes could be used as a source of single photons for applications in quantum cryptography.

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