Entanglement distribution quantum networking within deployed telecommunications fibre-optic infrastructure

Marcus J H Clark*, Obada Alia, Rui Wang, Sima Bahrani, Matej Peranic, Djeylan Vincent Aktas, George Kanellos, Martin Loncaric, Zeljko Samec, Anton Radman, Mario Stipcevic, Reza Nejabati, Dimitra Simeonidou, John G Rarity, Siddarth Koduru Joshi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

3 Citations (Scopus)
27 Downloads (Pure)


Quantum networks have been shown to connect users with full-mesh topologies without trusted nodes. We present advancements on our scalable polarisation entanglement-based quantum network testbed, which has the ability to perform protocols beyond simple quantum key distribution. Our approach utilises wavelength multiplexing, which is ideal for quantum networks across local metropolitan areas due to the ease of connecting additional users to the network without increasing the resource requirements per user. We show a 10 user fully connected quantum network with metropolitan scale deployed fibre links, demonstrating polarisation stability and the ability to generate secret keys over a period of 10.8 days with a network wide average-effective secret key rate of 3.38 bps.
Original languageEnglish
Title of host publicationProceedings Volume 12335, Quantum Technology:
Subtitle of host publicationDriving Commercialisation of an Enabling Science III
EditorsMiles J. Padgett, Kai Bongs, Alessandro Fedrizzi, Alberto Politi
Place of PublicationBellingham, Washington
PublisherSociety of Photo-Optical Instrumentation Engineers (SPIE)
Number of pages8
ISBN (Electronic)9781510657434
ISBN (Print)9781510657427
Publication statusPublished - 11 Jan 2023
EventSPIE Photonex 2022 - NEC Birmingham, Birmingham, United Kingdom
Duration: 6 Dec 20228 Dec 2022

Publication series

NameProceedings of SPIE, the International Society for Optical Engineering
ISSN (Electronic)0277-786X


ConferenceSPIE Photonex 2022
Country/TerritoryUnited Kingdom
Internet address


  • Quantum Communications
  • Quantum Networks
  • Entanglement
  • Entanglement distribution


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