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Proceedings Paper

Data encryption over an inline-amplified 200-km-long WDM line using coherent-state quantum cryptography
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Paper Abstract

We demonstrate quantum-noise protected data encryption over a 200km-long inline optically-amplified fiber line at 650Mbps rate using off-the-shelf components. In contrast to our previous implementation, this demonstration uses phase-encoded coherent states, resulting in a polarization independent system that is compatible with the existing WDM infrastructure. Security calculations are presented for individual attacks on both the encrypted data as well as the secret key. This demonstration paves the way for widespread deployment of quantum cryptography in WDM networks.

Paper Details

Date Published: 24 August 2004
PDF: 9 pages
Proc. SPIE 5436, Quantum Information and Computation II, (24 August 2004);
Show Author Affiliations
Eric Corndorf, Northwestern Univ. (United States)
Gregory S. Kanter, Northwestern Univ. (United States)
Chuang Liang, Northwestern Univ. (United States)
Prem Kumar, Northwestern Univ. (United States)

Published in SPIE Proceedings Vol. 5436:
Quantum Information and Computation II
Eric Donkor; Andrew R. Pirich; Howard E. Brandt, Editor(s)

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