Investigation of single-photon propagation velocity in optical fiber

J. D. Ingham, J. E. Carroll, I. H. White

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

1 Citation (SciVal)


Understanding the nature of single-photon propagation and any differences to the classical multi-photon regime is essential to better use the escalating number of single-photon technologies. Novel techniques and results are reported that demonstrate a consistent ability to measure the classical group velocity in an optical fiber to an accuracy in the time-of-flight around ±0.2 ns in 30,000 ns. Identical techniques are then applied to single photons to determine their velocity and assess if there is any evidence that Schrödinger frequencies (N+1/2)ω alter the ω-k dispersion diagram. The evidence suggests that photons in a circular fiber show no additional dispersion but travel at the classical group velocity.

Original languageEnglish
Title of host publicationPhysics and Simulation of Optoelectronic Devices XIV
Publication statusPublished - 22 May 2006
EventPhysics and Simulation of Optoelectronic Devices XIV - San Jose, CA, USA United States
Duration: 22 Jan 200626 Jan 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferencePhysics and Simulation of Optoelectronic Devices XIV
Country/TerritoryUSA United States
CitySan Jose, CA


  • Group velocity
  • Optical fiber propagation
  • Quantum optics
  • Single photon
  • Time of flight

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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