Protocol for generation of high-dimensional entanglement from an array of non-interacting photon emitters

Research output: Contribution to journalJournal articleResearchpeer-review


  • Thomas J. Bell
  • Jacob F.F. Bulmer
  • Alex E. Jones
  • hxb885, hxb885
  • Dara P.S. McCutcheon
  • Anthony Laing

Encoding high-dimensional quantum information into single photons can provide a variety of benefits for quantum technologies, such as improved noise resilience. However, the efficient generation of on-demand, high-dimensional entanglement was thought to be out of reach for current and near-future photonic quantum technologies. We present a protocol for the near-deterministic generation of N-photon, d-dimensional photonic Greenberger-Horne-Zeilinger (GHZ) states using an array of d non-interacting single-photon emitters. We analyse the impact on performance of common sources of error for quantum emitters, such as photon spectral distinguishability and temporal mismatch, and find they are readily correctable with time-resolved detection to yield high fidelity GHZ states of multiple qudits. When applied to a quantum key distribution scenario, our protocol exhibits improved loss tolerance and key rates when increasing the dimensionality beyond binary encodings.

Original languageEnglish
Article number013032
JournalNew Journal of Physics
Issue number1
Number of pages8
Publication statusPublished - 28 Jan 2022

Bibliographical note

Publisher Copyright:
© 2022 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.

    Research areas

  • entanglement, GHZ states, quantum computing, quantum emitters, quantum optics, qudits, time-resolved detection

ID: 307527445