The security of practical quantum key distribution
Valerio ScaraniCentre for Quantum Technologies and Department of Physics, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore and Group of Applied Physics, University of Geneva, 20 rue de l'Ecole de Médicine, 1211 Geneva, SwitzerlandH. Bechmann-PasquinucciCentre for Quantum Technologies and Department of Physics, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore and Group of Applied Physics, University of Geneva, 20 rue de l'Ecole de Médicine, 1211 Geneva, SwitzerlandNicolas J. CerfCentre for Quantum Technologies and Department of Physics, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore and Group of Applied Physics, University of Geneva, 20 rue de l'Ecole de Médicine, 1211 Geneva, SwitzerlandMiloslav DušekCentre for Quantum Technologies and Department of Physics, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore and Group of Applied Physics, University of Geneva, 20 rue de l'Ecole de Médicine, 1211 Geneva, SwitzerlandNorbert LütkenhausCentre for Quantum Technologies and Department of Physics, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore and Group of Applied Physics, University of Geneva, 20 rue de l'Ecole de Médicine, 1211 Geneva, SwitzerlandMomtchil PeevCentre for Quantum Technologies and Department of Physics, National University of Singapore, 3 Science Drive 2, Singapore 117543, Singapore and Group of Applied Physics, University of Geneva, 20 rue de l'Ecole de Médicine, 1211 Geneva, Switzerland
2009en
ABI
Annotatsiya
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 theoretical tools that have been developed to assess the security of the main experimental platforms are presented (discrete-variable, continuous-variable, and distributed-phase-reference protocols).
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