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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。
Quantum communication is an emerging product of quantum physics and information science. The basic principles of quantum mechanics to ensure the absolute security of communications, which will essentially enhance communications security, in fact, the use and industrialization will bring a revolution in the future communications industry. At present, the practical quantum communication in the international competition is very fierce. In this paper, an absolutely secure 3-node chain-like quantum communication network based on the lure-state scheme is implemented in Hefei, and the all-pass star-shaped quantum communication network is further realized. The realized communication network is at the leading level both in communication distance and communication speed, marking our country’s ability to compete with the developed countries in Europe and the United States in the field of practical quantum communication.