Unconditional Security of the Bennett 1992 quantum key-distribution over lossy and noisy channel

Details Unconditional Security of the Bennett 1992 quantum key-distribution over lossy and noisy channel Unconditional Security of the Bennett 1992 quantum key-distribution over lossy and noisy channel

2003-08-08

arxiv.org/abs/quant-ph/0308048v2

Phys. Rev. A 69, 032316 (2004)

Physics

Quantum Physics

5 pages, 2 figures. We have presented this topic at QIPC 2003 as a poster session

Scientific paper

10.1103/PhysRevA.69.032316

We show that the security proof of the Bennett 1992 protocol over loss-free
channel in (K. Tamaki, M. Koashi, and N. Imoto, Phys. Rev. Lett. 90, 167904
(2003)) can be adapted to accommodate loss. We assumed that Bob's detectors
discriminate between single photon states on one hand and vacuum state or
multi-photon states on the other hand.

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