Single photon quantum cryptography.

  title={Single photon quantum cryptography.},
  author={Alexios Beveratos and Rosa Brouri and Thierry Gacoin and Andr{\'e} Villing and J. C. Poizat and Philippe Grangier},
  journal={Physical review letters},
  volume={89 18},
We report the full implementation of a quantum cryptography protocol using a stream of single photon pulses generated by a stable and efficient source operating at room temperature. The single photon pulses are emitted on demand by a single nitrogen-vacancy color center in a diamond nanocrystal. The quantum bit error rate is less that 4.6% and the secure bit rate is 7700 bits/s. The overall performances of our system reaches a domain where single photons have a measurable advantage over an… CONTINUE READING
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