世界各国竞相研发量子通信

随着电子信息技术的迅猛发展，安全高效的信息传输日益受到人们的关注。量子通信作为当今通信领域的新宠，以其绝对安全性、超大信通容量、超高通信速率、远距离传输和信息高效率等特点，引起了国际范围的广泛关注。本文概述了量子通信及其特点和应用，追溯了量子通信起源．介绍了美国、日本、欧洲等国的量子通信研究与发展状况，展望了量子通信发展前景。

Many Countries Compete to Research and Develop Quantum Communication

With the rocketing development of electronic information technology, secure and efficient communica- tion has attracted increasing attention. As a new hotspot in present communication field, quantum communication has been causing extensive concern in the world by absolute security, large ICT capacity, ultra-high communica- tion rate, long distance transmission and high information efficiency. The paper outlines the characteristics and applications of quantum communication, and traces its origin, introduces the situation of research and development of quantum communication in America, Japan and Europe, and makes prospects for the future of the quantum communication in the world.