Practical quantum key distribution with polarization entangled photons

We present an entangled-state quantum cryptography system that operated for the first time in a real-world application scenario. The full key generation protocol was performed in real-time between two distributed embedded hardware devices, which were connected by 1.45 km of optical fiber, installed...

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Bibliographic Details
Published in:Optics express 2004-08, Vol.12 (16), p.3865-3871
Main Authors: Poppe, A, Fedrizzi, A, Ursin, R, Böhm, H, Lörunser, T, Maurhardt, O, Peev, M, Suda, M, Kurtsiefer, C, Weinfurter, H, Jennewein, T, Zeilinger, A
Format: Article
Language:English
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Summary:We present an entangled-state quantum cryptography system that operated for the first time in a real-world application scenario. The full key generation protocol was performed in real-time between two distributed embedded hardware devices, which were connected by 1.45 km of optical fiber, installed for this experiment in the Vienna sewage system. The generated quantum key was immediately handed over and used by a secure communication application.
ISSN:1094-4087
1094-4087
DOI:10.1364/OPEX.12.003865