China Telecom has unveiled the world’s first commercial quantum-encrypted communication system, designed to resist hacking—even from quantum computers. As part of a technology demonstration, a secure phone call was successfully made between Beijing and Hefei, covering a distance of over 1,000 km. This breakthrough is a direct response to the growing threat posed by quantum computing, which may one day crack traditional encryption methods.
The system integrates two key components: quantum key distribution (QKD), which enables secure transmission of encryption keys, and post-quantum cryptography to safeguard data. Together, they form an end-to-end secure architecture that protects critical digital services, including real-time communication, data integrity, and authentication. According to Professor Pan Jianwei, this is a necessary step in the face of rapidly advancing quantum technologies.
China Telecom has already established quantum networks in 16 major Chinese cities. The most advanced is the Hefei Quantum Network, featuring eight nodes, 159 access points, and 1,150 km of optical fiber. It currently serves hundreds of government agencies and state-owned enterprises, underscoring China’s leadership in quantum security.
In addition to the network infrastructure, China Telecom introduced two quantum-secured platforms: Quantum Secret, for encrypted messaging and collaboration, and Quantum Cloud Seal, for managing critical information such as government and financial documents. Both platforms are already being deployed across multiple industries, reflecting growing demand for next-generation security solutions.
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