The security of practical quantum key distribution

  title={The security of practical quantum key distribution},
  author={Valerio Scarani and H. Bechmann-Pasquinucci and Nicolas J. Cerf and Miloslav Du{\vs}ek and Norbert Lutkenhaus and Momtchil Peev},
  journal={Reviews of Modern Physics},
Quantum key distribution (QKD) is the first quantum information task to reach the level of mature technology, already fit for commercialization. It aims at the creation of a secret key between authorized partners connected by a quantum channel and a classical authenticated channel. The security of the key can in principle be guaranteed without putting any restriction on an eavesdropper's power. This article provides a concise up-to-date review of QKD, biased toward the practical side. Essential… 

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