Type: Article
Publication Date: 2004-02-06
Citations: 728
DOI: https://doi.org/10.1103/physrevlett.92.057901
We introduce a new class of quantum key distribution protocols, tailored to be robust against photon number splitting (PNS) attacks. We study one of these protocols, which differs from the original protocol by Bennett and Brassard (BB84) only in the classical sifting procedure. This protocol is provably better than BB84 against PNS attacks at zero error.