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International Conference on Quantum Communications, Networking, and Computing (QCNC)

Full-Mesh Quantum Key Distribution Network Based on Time-Shared Entanglement Distribution

Yury Kurochkin, V.E. Rodimin, Alexei Ponasenko, Attila Pereszlényi, Vlad Revici, Rodrigo Piera, Tahar Mehri, Karen Sloyan, Jaideep Singh, James A. Grieve

Published Apr 6, 2026• 0 citations
Publisher

Abstract

We report on the design and field validation of a fully connected entanglement-based quantum key distribution (QKD) network employing a time-shared photon-pair source and reconfigurable optical switching. The system eliminates the need for trusted relay nodes and enables any-to-any secure connectivity among users over metropolitan-scale fiber infrastructure. We present a three-node prototype network operating in the O-band$(1310 / 1316 \text{nm})$which demonstrates key generation sufficient to provide pairwise 10 G encrypted connections between 32 users, and confirming practical feasibility for telecom integration.

DOI
10.1109/qcnc69040.2026.00117

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