论文标题
基于卫星的光子量子网络是小世界
Satellite-based photonic quantum networks are small-world
论文作者
论文摘要
建立卫星到地量子通信的最新里程碑实验为开发量子互联网的发展铺平了道路，量子互联网是由量子通道互连的网络。在这里，我们采用网络理论来研究可以通过基于卫星的量子通信生成的光子网络的性质，并将其与光纤对应物进行比较。我们预测卫星可以生成小世界网络，这意味着从网络的角度来看，物理上遥远的节点实际上已经接近。我们还分析了网络的连接性能，并特别表明它们与随机失败具有鲁棒性。这使基于卫星的量子通信是在尺寸和复杂性不断增长的量子网络中跨距离大距离分发纠缠的最有前途的技术。
Recent milestone experiments establishing satellite-to-ground quantum communication are paving the way for the development of the quantum internet, a network interconnected by quantum channels. Here we employ network theory to study the properties of the photonic networks that can be generated by satellite-based quantum communication and compare it with the optical-fiber counterpart. We predict that satellites can generate small-world networks, implying that physically distant nodes are actually near from a network perspective. We also analyse the connectivity properties of the network and show, in particular, that they are robust against random failures. This puts satellite-based quantum communication as the most promising technology to distribute entanglement across large distances in quantum networks of growing size and complexity.
