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Optics Letters

Optics Letters


  • Vol. 28, Iss. 21 — Nov. 1, 2003
  • pp: 2040–2042

High-speed data encryption over 25 km of fiber by two-mode coherent-state quantum cryptography

Eric Corndorf, Geraldo Barbosa, Chuang Liang, Horace P. Yuen, and Prem Kumar  »View Author Affiliations

Optics Letters, Vol. 28, Issue 21, pp. 2040-2042 (2003)

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We demonstrate high-speed (250 Mbps) data encryption over 25 km of telecommunication fiber by use of coherent states. 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. Whereas other quantum-cryptographic schemes require the use of fragile quantum states and ultrasensitive detection equipment, our protocol is loss tolerant, uses off-the-shelf components, and is optically amplifiable.

© 2003 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(270.2500) Quantum optics : Fluctuations, relaxations, and noise

Eric Corndorf, Geraldo Barbosa, Chuang Liang, Horace P. Yuen, and Prem Kumar, "High-speed data encryption over 25 km of fiber by two-mode coherent-state quantum cryptography," Opt. Lett. 28, 2040-2042 (2003)

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