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Breakthrough Quantum Network Transmits Data 3,700 km Securely

2/13/2026

Summary

Story summary

Researchers at Peking University have developed a prototype for long-distance quantum communication networks capable of transmitting data over 3,700 km.
The study, published in Nature, presents quantum key distribution as a secure method with detectable eavesdropping.
QKD faces challenges including limited range and high equipment costs.
Current systems rely on trusted relay nodes to manage quantum keys, which can introduce security vulnerabilities similar to packages passing through multiple distribution centers.

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Story summary

Researchers at Peking University have developed a prototype for long-distance quantum communication networks capable of transmitting data over 3,700 km.
The study, published in Nature, presents quantum key distribution as a secure method with detectable eavesdropping.
QKD faces challenges including limited range and high equipment costs.
Current systems rely on trusted relay nodes to manage quantum keys, which can introduce security vulnerabilities similar to packages passing through multiple distribution centers.