Security of Quantum Key Distribution with Entangled Qutrits
Quantum Physics
2009-11-07 v2
Abstract
The study of quantum cryptography and quantum non-locality have traditionnally been based on two-level quantum systems (qubits). In this paper we consider a generalisation of Ekert's cryptographic protocol [Ekert] where qubits are replaced by qutrits. The security of this protocol is related to non-locality, in analogy with Ekert's protocol. In order to study its robustness against the optimal individual attacks, we derive the information gained by a potential eavesdropper applying a cloning-based attack.
Cite
@article{arxiv.quant-ph/0207057,
title = {Security of Quantum Key Distribution with Entangled Qutrits},
author = {Thomas Durt and Nicolas J. Cerf and Nicolas Gisin and Marek Zukowski},
journal= {arXiv preprint arXiv:quant-ph/0207057},
year = {2009}
}
Comments
9 pages original version: july 2002, replaced in january 2003 (reason: minor changes)