Fast and simple one-way quantum key distribution

  title={Fast and simple one-way quantum key distribution},
  author={Damien Stucki and Nicolas Brunner and Nicolas Gisin and Valerio Scarani and Hugo Zbinden},
  journal={Applied Physics Letters},
We present and demonstrate a new protocol for practical quantum cryptography, tailored for an implementation with weak coherent pulses to obtain a high key generation rate. The key is obtained by a simple time-of-arrival measurement on the dataline; the presence of an eavesdropper is checked by an interferometer on an additional monitoring line. The setup is experimentally simple; moreover, it is tolerant to reduced interference visibility and to photon number splitting attacks, thus featuring… 

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