The Physics of Quantum Information

• Unité de recherche: PCRD EU
• Numéro de projet: 95.0776
• Titre du projet anglais: The Physics of Quantum Information

Mots-clé (Anglais)

Quantum cryptography; open quantum systems

Autre Numéro de projet (Anglais)

EU project number: FMRXCT960087

Programme de recherche (Anglais)

EU-programme: 4. Frame Research Programme - 10.1 Stimulation of training and mobility

Description succincte (Anglais)

See abstract

Partenaires et organisations internationales (Anglais)

Coordinator: Leopold-Franzens Universität Innsbruck (D)

Résumé des résultats (Abstract) (Anglais)

This large European network provides an excellent forum for the exchange of ideas in the fast evolving field of quantum information theory and its physics aspects. In Geneva, we concentrated on the relation between the security of quantum cryptography protocols and Bell's inequalities. This relation provides a nice connection between a quite concrete question (how good must a quantum channel be to guaranty quantum security?) and an abstract question (how good must a quantum channel be to allow the demonstration of quantum nonlocality?). Several papers on this issue have been published within various international collaborations. In particular, in Phys. Rev. Lett. 87, 117901, 2001, we proved that for an entire class of quantum key distribution between n partner protocols, the qualities of the quantum channel required for security and for quantum nonlocality are exactly identical.

Références bases de données (Anglais)

Swiss Database: Euro-DB of the
State Secretariat for Education and Research
Hallwylstrasse 4
CH-3003 Berne, Switzerland
Tel. [phone]
Swiss Project-Number: 95.0776