Quantum-noise randomized data encryption for wavelength-division- multiplexed fiber-optic networks

Eric Corndorf*, Chuang Liang, Gregory S. Kanter, Prem Kumar, Horace P. Yuen

*Corresponding author for this work

Research output: Contribution to journalArticle

63 Scopus citations

Abstract

We demonstrate high-rate randomized data-encryption through optical fibers using the inherent quantum-measurement noise of coherent states of light. Specifically, we demonstrate 650Mbit.s data encryption through a 10Gbit.s data-bearing, in-line amplified 200-km-long line. In our protocol, legitimate users (who share a short secret key) communicate using an M-ry signal set while an attacker (who does not share the secret key) is forced to contend with the fundamental and irreducible quantum-measurement noise of coherent states. Implementations of our protocol using both polarization-encoded signal sets as well as polarization-insensitive phase-keyed signal sets are experimentally and theoretically evaluated. Different from the performance criteria for the cryptographic objective of key generation (quantum key-generation), one possible set of performance criteria for the cryptographic objective of data encryption is established and carefully considered.

Original languageEnglish (US)
Article number062326
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume71
Issue number6
DOIs
StatePublished - Jun 1 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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