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

Eric Corndorf; Gregory S. Kanter; Chuang Liang; Prem Kumar

doi:10.1117/12.541195

24 August 2004 Data encryption over an inline-amplified 200-km-long WDM line using coherent-state quantum cryptography

Eric Corndorf, Gregory S. Kanter, Chuang Liang, Prem Kumar

Proceedings Volume 5436, Quantum Information and Computation II; (2004) https://doi.org/10.1117/12.541195
Event: Defense and Security, 2004, Orlando, Florida, United States

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.

Citation Download Citation

Eric Corndorf, Gregory S. Kanter, Chuang Liang, and Prem Kumar "Data encryption over an inline-amplified 200-km-long WDM line using coherent-state quantum cryptography", Proc. SPIE 5436, Quantum Information and Computation II, (24 August 2004); https://doi.org/10.1117/12.541195

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