Related papers: Tightening the eavesdropping accessible informatio…
The paper has been withdrawn
This paper has been withdrawn.
This paper has been withdrawn as it has been superseded by postings arXiv:quant-ph/0702147 and arXiv:0712.2935
This paper has been withdrawn: it does not evade the no-go results of Mayers, Lo and Chau, to whom I am most grateful for helpful correspondences.
This paper has been withdrawn.
This paper has been withdrawn by the authors.
This paper has been withdrawn by the author
The paper has been withdrawn.
This paper has been withdrawn by the author due to some problems.
This paper has been withdrawn by the author(s), due a crucial error on the entanglement of $\Gamma$ registers.
This paper has been withdrawn by the author(s)
We propose an efficient quantum key distribution scheme based on entanglement. The sender chooses pairs of photons in one of the two equivalent nonmaximally entangled states randomly, and sends a sequence of photons from each pair to the…
Quantum key distribution (QKD) allows two spatially separated parties to securely generate a cryptographic key. The first QKD protocol, published by C. H. Bennett and G. Brassard in 1984 (BB84), describes how this is achieved by…
This paper has been withdrawn. The main technical result will reappear in the new version of quant-ph/0501003.
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 implementations. The security of this protocol is shown…
Quantum key distribution (QKD) is the most explored application of quantum information theory. A central problem in entanglement-based QKD (EB-QKD), is whether every entangled state can be used to extract a key. We observe that entanglement…
Administratively withdrawn.
By carrying out measurements on entangled states, two parties can generate a secret key which is secure not only against an eavesdropper bound by the laws of quantum mechanics, but also against a hypothetical "post-quantum" eavesdroppers…
This paper is withdrawn. See quant-ph/9806031 for a discussion.
This paper has been withdrawn.