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Nanjing University researchers have demonstrated a significant breakthrough in multi-user quantum networks by implementing an asynchronous measurement-device-independent protocol that drastically improves key generation rates under high transmission loss. This advancement overcomes previous scalability bottlenecks, moving beyond the limitations of rare multiphoton coincidence events essential for building practical, large-scale quantum communication infrastructures.
Nanjing University boosts quantum key rates for three-user networks

Nanjing University researchers boosted secure communication, demonstrating a three-user quantum network with improved key generation.
Nanjing University researchers have linked three users in a quantum communication experiment, establishing a shared secure key and moving beyond typical two-party quantum key distribution. The team reports demonstrating an asynchronous measurement-device-independent quantum cryptographic conferencing (AMDI QCC) protocol, designed to eliminate reliance on a trusted measurement station and…
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