Information Security and Cryptography Research Group

Security of Quantum Key Distribution Protocols using two-way Classical Communication or Weak Coherent Pulses

Barbara Kraus, Cyril Branciard, and Renato Renner

Physical Review Letters A, vol. 75, pp. 012316, Jan 2007, Available at http://arxiv.org/abs/quant-ph/0610151.

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.

BibTeX Citation

@article{KrBrRe07,
author       = {Barbara Kraus and Cyril Branciard and Renato Renner},
title        = {Security of Quantum Key Distribution Protocols using two-way Classical Communication or Weak Coherent Pulses},
journal      = {Physical Review Letters A},
pages        = 012316,
volume       = 75,
year         = 2007,
month        = 1,
note         = {Available at http://arxiv.org/abs/quant-ph/0610151},
}