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

Eric Corndorf; Prem Kumar; Chuang Liang; Geraldo A. Barbosa; Horace P. Yuen

doi:10.1117/12.506650

3 February 2004 Efficient quantum cryptography with coherent-state light in optical fibers at Gbps rates

Eric Corndorf, Prem Kumar, Chuang Liang, Geraldo A. Barbosa, Horace P. Yuen

Proceedings Volume 5161, Quantum Communications and Quantum Imaging; (2004) https://doi.org/10.1117/12.506650
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

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.

Citation Download Citation

Eric Corndorf, Prem Kumar, Chuang Liang, Geraldo A. Barbosa, and Horace P. Yuen "Efficient quantum cryptography with coherent-state light in optical fibers at Gbps rates", Proc. SPIE 5161, Quantum Communications and Quantum Imaging, (3 February 2004); https://doi.org/10.1117/12.506650

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