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China Achieves Milestone in Quantum Direct Communication: Establishing 300-Kilometer-Level Fully Connected Network
2025-06-02 /
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Author：小编
A groundbreaking Chinese research team has innovatively proposed a theoretical framework for scalable, large-scale, and long-distance fully connected quantum direct communication. They have successfully constructed a quantum direct communication network spanning 300 kilometers across four nodes, marking a significant advancement. The results of this research have been published in Science Bulletin. This network utilizes dual-pumped optical parametric down-conversion technology, achieving a quantum state fidelity exceeding 85% and a theoretical communication rate of several bits per second. These achievements lay a solid foundation for the practical implementation and widespread adoption of quantum communication networks.
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