Quantum networking with photonic graph states

这是一项物理学博士研究项目。量子网络使纠缠能够在任意一组相连的节点之间分布，用于量子通信、分布式量子计算和传感。这个项目将集中在使用光子图态的量子网络任务的实验演示，该图态由电信波长上的多达8个纠缠光子组成。我们将研究一系列多方量子通信场景，包括会议密钥分发，它允许多个用户之间同时生成量子密钥；全光中继器，它通过分发冗余的簇碎片来消除对量子存储器的需求；量子网络中出现的新形式的非局域性；以及网络中量子信息的最佳路由。该项目将与英国量子通信技术中心合作进行。

This is a PhD research project in Physics. Quantum networks enable the distribution of entanglement between arbitrary sets of connected nodes for quantum communication, distributed quantum computing, and sensing. This project will focus on experimental demonstrations of quantum networking tasks using photonic graph states consisting of up to 8 entangled photons at telecom wavelengths. We will study a range of multi-party quantum communication scenarios, including conference key distribution, which allows simultaneous quantum key generation between multiple users; all-optical repeaters, which obviate the need for quantum memories by distributing redundant cluster fragments; novel forms of non-locality emerging in quantum networks; and the optimal routing of quantum information in networks. The project will be carried out in collaboration with the UK quantum technology hub for quantum communications.