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, Prem Kumar

*Corresponding author for this work

Research output: Contribution to journalArticle

36 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)2040-2042
Number of pages3
JournalOptics Letters
Volume28
Issue number21
DOIs
StatePublished - Nov 1 2003

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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