A Scalable Multi-User QKD Hub for Entanglement-Based Phase-Time Coding
Lucas Bialowons, Erik Fitzke, Maximilian Tippmann, Oleg Nikiforov, Thomas Walther · Quantum Information and Measurement VI 2021 · 2021
Simultaneous pairwise quantum key distribution between four parties was demonstrated by implementing an entanglement-based phase-time coding protocol with a type-0 SPDC photon source. The star-shaped network is scalable to dozens of users.