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DIAMOND NANOCRYSTAL SINGLE-PHOTON SOURCE WITH WAVELENGTH CONVERTER
DIAMOND NANOCRYSTAL SINGLE-PHOTON SOURCE WITH WAVELENGTH CONVERTER
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机译:带波长转换器的金刚石纳米单光子源
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摘要
A single-photon source (SPS) (10) adapted to output single-photons (P3) at telecommunication wavelengths is disclosed. The SPS includes a color-centered diamond-nanocrystal (CCDN) single-photon source (SPS) (20) adapted to emit input photons (P1) having a wavelength A1 that lies outside of the main telecommunication wavelength bands. A non-linear optical medium (50) pumped using pump photons (P2) of wavelength A2 receives the input photons and optically downconverts them to output photons (P3) having a wavelength λ3 λ1 wherein λ3 is within a telecommunication wavelength band. An optical filter (60) arranged downstream of the non-linear optical medium substantially blocks the pump photons (P2) while allowing for the transmission of the output photons. A QKD system (200) that uses the SPS source of the present invention is also disclosed.
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