Security of quantum key distribution protocols using two-way classical communication or weak coherent pulses

Details Security of quantum key distribution protocols using two-way classical communication or weak coherent pulses Security of quantum key distribution protocols using two-way classical communication or weak coherent pulses

2006-10-18

arxiv.org/abs/quant-ph/0610151v1

Phys. Rev. A 75, 012316 (2007)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.75.012316

We apply the techniques introduced in [Kraus et. al., Phys. Rev. Lett. 95,
080501, 2005] to prove security of quantum key distribution (QKD) schemes using
two-way classical post-processing as well as QKD schemes based on weak coherent
pulses instead of single-photon pulses. As a result, we obtain improved bounds
on the secret-key rate of these schemes.

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