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Proceedings Paper

Efficient quantum cryptography with coherent-state light in optical fibers at Gbps rates
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Paper Abstract

We demonstrate high-speed (0.25Gbps) data encryption over 50km of telecom fiber using coherent states of light. For the parameter values used in the experiment, the demonstration is secure against individual ciphertext-only eavesdropping attacks near the transmitter with ideal detection equipment. While other quantum cryptographic schemes require the use of fragile quantum states and ultra-sensitive detection equipment, our protocol is loss tolerant, uses off-the-shelf components, and is optically amplifiable.

Paper Details

Date Published: 3 February 2004
PDF: 10 pages
Proc. SPIE 5161, Quantum Communications and Quantum Imaging, (3 February 2004); doi: 10.1117/12.506650
Show Author Affiliations
Eric Corndorf, Northwestern Univ. (United States)
Prem Kumar, Northwestern Univ. (United States)
Chuang Liang, Northwestern Univ. (United States)
Geraldo A. Barbosa, Northwestern Univ. (United States)
Horace P. Yuen, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 5161:
Quantum Communications and Quantum Imaging
Ronald E. Meyers; Yanhua Shih, Editor(s)

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