#### 中新社合肥5月16日电 (记者 吴兰)
据中国科学技术大学消息，该校潘建伟、包小辉、张强等科学家近日成功构建了国际首个基于纠缠的城域三节点量子网络。这一成就标志着现实量子纠缠网络的距离实现了前所未有的提升，从以往的几十米跨越至几十公里，相当于提升了三个数量级。
量子纠缠是量子力学中的一种现象，两个或多个粒子在量子态上相互依赖，无论它们相隔多远，一个粒子的状态变化会即时影响到另一个粒子的状态。这一特性使得量子纠缠成为实现量子信息传输和量子计算的基础。
此次中国科学家实现的城域三节点量子网络，是量子通信领域的一个重要进展。潘建伟团队通过精密的实验设计和量子光学技术的应用，克服了量子纠缠在长距离传输中的衰减和干扰问题，极大地扩展了量子纠缠现象的应用范围。
此次研究不仅对于量子通信技术的发展具有深远意义，也为未来量子互联网的构建奠定了基础。量子互联网是一个以量子信息技术为基础的新型网络，有望在安全通信、大数据处理等领域发挥重要作用。
中国科学家在这一领域的持续探索和突破，进一步体现了国家在科技创新和高技术发展方面的实力与决心。随着量子技术的不断进步，中国在引领全球科技革命和产业变革中正发挥着越来越重要的作用。
英语如下：
**Headline:** **Major Breakthrough in Quantum Entanglement Network: China’s USTC Research Team Increases Transmission Distance by Three Orders of Magnitude**
Keywords: Quantum Entanglement, Network Distance, Technological Innovation.
### Chinese Scientists Achieve Major Breakthrough in Quantum Entanglement Network Distance
#### May 16, 2023, Hefei, China (Xinhua News Agency) – By Wu Lan
According to China Science and Technology University, scientists Pan Jianwei, Bao Xiaohui, Zhang Qiang, and others recently successfully constructed the world’s first metropolitan three-node quantum network based on entanglement. This achievement marks an unprecedented increase in the distance of practical quantum entanglement networks, jumping from previous dozens of meters to dozens of kilometers, equivalent to a three-order-of-magnitude increase.
Quantum entanglement is a phenomenon in quantum mechanics where two or more particles are interdependent in their quantum state. No matter how far apart they are, the state change of one particle will instantly affect the state of another particle. This property makes quantum entanglement the foundation for achieving quantum information transmission and quantum computing.
The urban three-node quantum network achieved by Chinese scientists is an important progress in the field of quantum communication. The Pan Jianwei team overcame the decay and interference issues of quantum entanglement in long-distance transmission through precise experimental design and the application of quantum optical technology, greatly expanding the application range of the entanglement phenomenon.
This research is not only of profound significance for the development of quantum communication technology but also lays the foundation for the construction of the future quantum internet. The quantum internet, based on quantum information technology, is expected to play an important role in secure communication, big data processing, and other fields.
The continuous exploration and breakthroughs of Chinese scientists in this field further demonstrate the country’s strength and determination in scientific and technological innovation and the development of high technology. With the continuous progress of quantum technology, China is playing an increasingly important role in leading the global technological revolution and industrial transformation.
【来源】http://www.chinanews.com/gn/2024/05-16/10217770.shtml
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