Djordjevic Ivan B
Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ 85721, USA.
Entropy (Basel). 2020 Jul 29;22(8):831. doi: 10.3390/e22080831.
Research in quantum communications networks (QCNs), where multiple users desire to generate or transmit common quantum-secured information, is still in its beginning stage. To solve for the problems of both discrete variable- and continuous variable-quantum key distribution (QKD) schemes in a simultaneous manner as well as to enable the next generation of quantum communication networking, in this Special Issue paper we describe a scenario where disconnected terrestrial QCNs are coupled through low Earth orbit (LEO) satellite quantum network forming heterogeneous satellite-terrestrial QCN. The proposed heterogeneous QCN is based on the cluster state approach and can be used for numerous applications, including: (i) to teleport arbitrary quantum states between any two nodes in the QCN; (ii) to enable the next generation of cyber security systems; (iii) to enable distributed quantum computing; and (iv) to enable the next generation of quantum sensing networks. The proposed QCNs will be robust against various channel impairments over heterogeneous links. Moreover, the proposed QCNs will provide an unprecedented security level for 5G+/6G wireless networks, Internet of Things (IoT), optical networks, and autonomous vehicles, to mention a few.
量子通信网络（QCN）的研究仍处于起步阶段，在这种网络中，多个用户希望生成或传输共同的量子安全信息。为了同时解决离散变量和连续变量量子密钥分发（QKD）方案的问题，并推动下一代量子通信网络的发展，在本期特刊论文中，我们描述了一种场景：通过低地球轨道（LEO）卫星量子网络将断开连接的地面QCN耦合起来，形成异构卫星-地面QCN。所提出的异构QCN基于簇态方法，可用于多种应用，包括：（i）在QCN中的任意两个节点之间隐形传态任意量子态；（ii）推动下一代网络安全系统的发展；（iii）实现分布式量子计算；（iv）推动下一代量子传感网络的发展。所提出的QCN对异构链路上的各种信道损伤具有鲁棒性。此外，所提出的QCN将为5G+/6G无线网络、物联网（IoT）、光网络和自动驾驶车辆等提供前所未有的安全级别。
