Quantum-Noise Randomized Data-Encryption for WDM fiber-Optic Networks

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 650Mbps data encryption through a 10Gbps data-bearing, in-line amplified 200km-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.

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Document Details

Document Type
Technical Report
Publication Date
Mar 30, 2005
Accession Number
ADA442127

Entities

People

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

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Cryptography
  • Data Encryption
  • Detection
  • Detectors
  • Distributed Feedback Lasers
  • Information Theory
  • Lasers
  • Modulation
  • Modulators
  • Phase Shift
  • Physics
  • Quantum Cryptography
  • Quantum Measurement
  • Quantum Mechanics
  • Quantum Noise
  • Security Protocols

Fields of Study

  • Computer science

Readers

  • Cybersecurity.
  • Optical Physics and Photonics.
  • Radio communications and signal processing.

Technology Areas

  • Quantum Computing
  • Quantum Science - Quantum Key Distribution