Unconditional security of the Bennett 1992 quantum key-distribution protocol over a lossy and noisy channel
- 22 March 2004
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 69 (3) , 032316
- https://doi.org/10.1103/physreva.69.032316
Abstract
We show that the security proof of the Bennett 1992 protocol over loss-free channel given by Tamaki, Koashi, and 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 multiphoton states on the other hand.Keywords
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