我国取得可扩展量子网络突破，关注量子科技产业投资机遇

Investment Rating - The industry investment rating is "Positive" and maintained [7] Core Insights - Recent breakthroughs in scalable quantum networks by researchers from the University of Science and Technology of China have made long-distance quantum networks a realistic possibility. They achieved high-fidelity entanglement between single-atom nodes over long distances and successfully transmitted device-independent quantum key distribution (DI-QKD) over distances exceeding 100 kilometers, advancing the practical application of this technology [2][4][9] - The quantum communication industry in China is currently the largest globally, accounting for 25% of the market share, and is transitioning from demonstration projects to national infrastructure. The country has established the world's first and largest wide-area quantum backbone network, covering over 10,000 kilometers and 80 cities [9][4] - The recent advancements in quantum relay technology and DI-QKD mark a significant milestone for China's quantum communication sector, reinforcing its leading position and paving the way for the construction of a quantum internet [9][4] Summary by Sections Event Description - Researchers have constructed the basic module of a scalable quantum relay, enabling long-distance quantum networks. They achieved a significant milestone by extending the lifetime of quantum entanglement to 550 milliseconds, surpassing the time required to establish entanglement [4][9] Event Commentary - The successful implementation of high-fidelity entanglement over 11 kilometers and maintaining over 90% fidelity at 100 kilometers demonstrates the potential for practical quantum secure communication. This breakthrough is expected to accelerate the commercialization of quantum communication technologies [9][4]