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4 papers · 2 filters
100 km secure differential phase shift quantum key distribution with low jitter up-conversion detectors
Eleni Diamanti, Hiroki Takesue, Carsten Langrock +2
We present a quantum key distribution experiment in which keys that were secure against all individual eavesdropping attacks allowed by quantum mechanics were distributed over 100…
Unconditional security of the Bennett 1992 quantum key-distribution scheme with strong reference pulse
Kiyoshi Tamaki, Norbert Lütkenhaus, Masato Koashi +1
We prove the unconditional security of the original Bennett 1992 protocol with strong reference pulse. We show that we may place a projection onto suitably defined qubit spaces bef…
Decoy state quantum key distribution with two-way classical post-processing
Xiongfeng Ma, Chi-Hang Fred Fung, Frédéric Dupuis +3
Decoy states have recently been proposed as a useful method for substantially improving the performance of quantum key distribution protocols when a coherent state source is used.…
Phase-Remapping Attack in Practical Quantum Key Distribution Systems
Chi-Hang Fred Fung, Bing Qi, Kiyoshi Tamaki +1
Quantum key distribution (QKD) can be used to generate secret keys between two distant parties. Even though QKD has been proven unconditionally secure against eavesdroppers with un…