Photon antibunching in the photoluminescence spectra of a single carbon nanotube.
- Högele A Institute of Quantum Electronics, ETH Hönggerberg, Wolfgang-Pauli-Strasse 16, CH-8093 Zürich, Switzerland.
- Galland C
- Winger M
- Imamoğlu A
- 2008-06-04
Published in:
- Physical review letters. - 2008
English
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.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.100.217401
- PMID 18518631
- Persistent URL
- https://sonar.ch/global/documents/191116
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