我科研人员构建全球首个大规模量子通信芯片网络

Core Insights - The development of integrated optical quantum chips is crucial for achieving large-scale quantum communication [1][2] - The research team has successfully built the world's first large-scale quantum key distribution network based on integrated optical quantum chips, named "Weiming Quantum Chip Network" [1][2] Group 1: Technology Development - The team has created two core chips: one for the server side that generates ultra-low noise coherent light sources, and another for the user side that integrates all key functions for quantum key distribution [1] - The dual-field quantum key distribution (TF-QKD) offers measurement-device-independent security and long-distance transmission capabilities, with successful point-to-point key distribution over kilometers of optical fiber [1] Group 2: Network Capabilities - The "Weiming Quantum Chip Network" can support 20 chip users for simultaneous communication, with a maximum communication distance of 370 kilometers between any two users, breaking previous technical limitations [2] - The network's total networking capability reaches 3700 kilometers, marking a significant advancement towards practical and scalable quantum communication [2] Group 3: Production and Impact - The optical quantum chips exhibit high uniformity and yield in wafer-level fabrication, indicating potential for low-cost mass production, which is critical for building large-scale quantum communication networks [2] - The achievement is recognized as a major breakthrough in the field of quantum chips and networks, with significant implications for the future of quantum communication [2]