Chinese scientists find path for long-distance quantum communications network

South China Morning PostEN 1 min read 100% complete by Zhang TongFebruary 13, 2026 at 06:00 AM

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A team of scientists at Peking University has developed a prototype networking capacity that could advance long-distance quantum communication. Published in Nature this week, the study details a system capable of communicating over 3,700km. Quantum key distribution (QKD) is considered a highly secure communication method, but its practical application has been limited by range, cost, and efficiency issues. Current QKD systems rely on "trusted relay nodes," which introduce security vulnerabilities. This new development aims to address these limitations and pave the way for more secure and efficient long-distance quantum communication networks.

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Nature 50% China 70% Peking University 90%

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quantum communications 100% quantum key distribution 90% qkd 80% secure communication 70% long-distance 60% trusted relay nodes 50% networking capacity 50% security vulnerabilities 40%

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Positive

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South China Morning Post

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85%

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China

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quantum communications quantum key distribution qkd secure communication long-distance trusted relay nodes networking capacity security vulnerabilities

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