应用诱骗态量子密码技术建立安全通信网络的实际应用测试

量子通信是量子物理与信息科学相结合的新兴产物。量子力学的基本原理保证了通信的绝对安全,从而将在本质上提升通信安全,其实用化和产业化也将给未来的通信产业带来一场革命。目前,实用化的量子通信在国际上的竞争非常激烈。本项研究在合肥实现了基于诱骗态方案的绝对安全的3节点链状量子通信网络,并进一步实现了全通型的星形量子通信网络。所实现的通信网络,在通信距离和通信速率上都处于国际领先水平,标志着我国在实用化量子通信领域已具备和欧美发达国家竞争的能力。

Practical Test of a Secure Communication Network with Decoy-State Quantum Cryptography Technology

Hefei National Laboratory for Physical Sciences at the Microscale,University of Science Technology of China,Hefei 230026 Quantum communication is the new field of combining quantum physics and information science.The fundamental laws of quantum mechanical guarantee the unconditional security of the communication,which will essentially enhance communication security.Also,the practicality and industrialization of quantum communication will bring a revolution to the future of communication industry.Now,the competition for the practical quantum communication is very fierce.Our research group have presented a 3-node chained quantum communication network based on decoy-state method in Hefei with guaranteed unconditional security,and have further realized a full-connectivity ＇star type’ quantum communication network.The realized communication network has reached the advanced level in this field both on the communication distance and on the communication rate,which indicates that our country is already able to compete with western developed countries in practical quantum communication field.