Photon antibunching in single-walled carbon nanotubes at telecommunication wavelengths and room temperature

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We investigated the photoluminescence of individual air-suspended single-walled carbon nanotubes (SWNTs) from 6 to 300 K. Time-resolved and antibunching measurements over the telecommunication wavelength range were performed using a superconducting single-photon detector. We detected moderate temperature independent antibunching behavior over the whole temperature range studied. To investigate the exciton dynamics, which is responsible for the antibunching behavior, we measured excitation-power and temperature dependence of the photoluminescence spectra and lifetime decay curves. These measurements suggested an exciton confinement effect that is likely caused by high-dielectric amorphous carbon surrounding the SWNTs. These results indicate that SWNTs are good candidates for light sources in quantum communication technologies operating in the telecommunication wavelength range and at room temperature.

元の言語English
記事番号113106
ジャーナルApplied Physics Letters
106
発行部数11
DOI
出版物ステータスPublished - 2015 3 16

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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