We present a complete protocol for BB84 quantum key distribution for a realistic setting
(noise, loss, multi-photon signals of the source) that covers many of todays experimental …

We prove the security of the Bennett-Brassard (BB84) quantum key distribution protocol in
the case where the key information is encoded in the relative phase of a coherent-state …

I prove the security of quantum key distribution against individual attacks for realistic signals
sources, including weak coherent pulses and down-conversion sources. The proof applies …

As quantum key distribution becomes a mature technology, it appears clearly that some
assumptions made in the security proofs cannot be justified in practical implementations …

We devise a simple modification that essentially doubles the efficiency of the BB84 quantum
key distribution scheme proposed by Bennett and Brassard. We also prove the security of …

The security of quantum key distribution (QKD) has been proven for different protocols, in
particular for the BB84 protocol. It has been shown that this scheme is robust against …

Quantum key distribution (QKD) is the first quantum information task to reach the level of
mature technology, already fit for commercialization. It aims at the creation of a secret key …

Security bounds for key distribution protocols using coherent and squeezed states and
homodyne measurements are presented. These bounds refer to (i) general attacks and (ii) …

We investigate the security of quantum key distribution with entangled photons, focusing on
the two-photon variation of the Bennett-Brassard 1984 (BB84) protocol proposed in 1992 by …

We prove the security of theoretical quantum key distribution against the most general
attacks which can be performed on the channel, by an eavesdropper who has unlimited …