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Swedish researchers have successfully deployed a 303 km trusted-node Quantum Key Distribution link integrated into an existing telecom network, demonstrating the viability of scaling QKD infrastructure over single-mode and multi-core fiber. This field trial validates the practical integration of secure quantum channels into dynamically reconfigurable networks, marking a significant step toward real-world quantum-secure communications.

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Field Demonstration of Trusted-Node QKD over Deployed Single-Mode and Multi-Core Fiber Infrastructure

Quantum Computing ReportJune 9, 20264 min read

A collaborative research team representing Linköping University, KTH Royal Institute of Technology, Stockholm University, and Chalmers University of Technology has reported the physical deployment of a long-haul, trusted-node Quantum Key Distribution (QKD) link integrated into a dynamically reconfigurable telecommunications network. Detailed in an open-access preprint on arXiv, the field trial established secure quantum channels over [...] The post Field Demonstration of Trusted-Node QKD over Deployed Single-Mode and Multi-Core Fiber Infrastructure appeared first on Quantum Computing Report.

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