Quantum channel capacity for OAM based free-Space optical communications

Ivan B. Djordjevic, Yequn Zhang, Xin Gao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


We study the channel capacity for orbital angular momentum (OAM) based quantum free-space optical communications. Inspired by recent demonstrations for OAM-based single-photon communication, we construct the quantum density operator in matrix form, based on OAM eigenkets, and determine the quantum channel model suitable for study of the quantum communication over atmospheric turbulence channels. The quantum channel model is derived from OAM eigenkets transition probabilities. By using this model we determine the OAM quantum channel capacity in the presence of atmospheric turbulence. The proposed quantum channel model is of high importance for future study of quantum error correction coding to extend the transmission distance and data rate of free-space quantum communications.

Original languageEnglish (US)
Title of host publicationQuantum Communications and Quantum Imaging X
StatePublished - 2012
EventQuantum Communications and Quantum Imaging X - San Diego, CA, United States
Duration: Aug 15 2012Aug 16 2012

Publication series

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


OtherQuantum Communications and Quantum Imaging X
Country/TerritoryUnited States
CitySan Diego, CA


  • Free-space optical communications
  • Orbital angular momentum (oam)
  • Quantum channel capacity
  • Quantum channel models
  • Quantum communications
  • Quantum information theory

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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