Multiplexing scheme for simplified entanglement-based large-alphabet quantum key distribution

Adetunmise C. Dada

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)


We propose a practical quantum cryptographic scheme which combines high information capacity, such as provided by high-dimensional quantum entanglement, with the simplicity of a two-dimensional Clauser-Horne-Shimony-Holt (CHSH) Bell test for security verification. By applying a state combining entanglement in a two-dimensional degree of freedom, such as photon polarization, with high-dimensional correlations in another degree of freedom, such as photon orbital angular momentum (OAM) or path, the scheme provides a considerably simplified route towards security verification in quantum key distribution (QKD) aimed at exploiting high-dimensional quantum systems for increased secure key rates. It also benefits from security against collective attacks and is feasible using currently available technologies.
Original languageUndefined/Unknown
JournalPhysical Review A: Atomic, Molecular and Optical Physics
Publication statusPublished - 29 Apr 2015

Bibliographical note

7 pages, 3 figures


  • quant-ph
  • physics.optics

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