国际研究人员团队开发了第一个分布式QKD网络，用于在突破性设计中共享量子键。
到目前为止，量子密钥分布已经指向点，即使在卫星上，但这限制了网络中的使用。已发布的多路复用光子量子密钥分布（QKD）系统科学推进，支持八个用户，可以轻松缩放。
“这是一个巨大的突破,使the quantum internet a much more realistic proposition,” said Dr Siddarth Joshi, who headed the project at the Quantum Engineering Technology (QET) Labs at the University of Bristol, UK. “Until now, building a quantum network has entailed huge cost, time, and resource, as well as often compromising on its security which defeats the whole purpose.”
“我们的解决方案是可扩展的，相对便宜，最重要的，绝不可准。这意味着它是一个令人兴奋的游戏更换器，并为这项技术的更快速发展和广泛的推出铺平了道路，“他说。
Photonic QKD systems use entangled photons to ensure an encryption key is not intercepted.
“Until now efforts to expand the network have involved vast infrastructure and a system which requires the creation of another transmitter and receiver for every additional user. Sharing messages in this way, known as trusted nodes, is just not good enough because it uses so much extra hardware which could leak and would no longer be totally secure.”
该团队包括来自英国利兹大学，克罗地亚的鲁德博尔库科维奇研究所（RBI）的研究人员，奥地利萨格勒布，维也纳和中国国防科技大学（州立国防科技大学（IQOQI），在长沙。
The team used multiplexing to develop an eight user system with eight transceivers, rather than the 56 that would previously be needed for each user to have a point to point link. The receivers were connected to optical fibres via different
