27/02/2009, 15:00 — 16:00 — Sala P4.35, Pavilhão de Matemática
José Cláudio do Nascimento, U Fortaleza
Quantum identification system over a private quantum channel
All proposals for quantum key distribution require that the parties have access to an authenticated channel. Therefore, a key pre-distribution system is needed to provide authentication for the users. In this paper we propose an efficient scheme for key pre-distribution and identification for users with quantum channel. Our proposal uses quantum one-time-pad for implementing a quantum private channel. The quantum identification scheme proposed requires eight times less qubits than the trivial schemed used in other QKD, and moreover, the network initialization with n users requires only O(n) keys.
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Apoiado por: Phys-Info (IT), SQIG (IT), CeFEMA e CAMGSD, com financiamento de FCT, FEDER and EU FP7, especificamente via o Doctoral Programme in the Physics and Mathematics of Information (DP-PMI), os projectos estratégicos FCT PEst-OE/EEI/LA0008/2013 e UID/EEA/50008/2013, o projecto IT QuSim, o projecto CRUP-CPU CQVibes, a Acção de Coordenação FP7 QUTE-EUROPE (600788) e os projectos FP7 Landauer (GA 318287) e PAPETS (323901).
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