The classical internet demonstrates the power of networks that connect devices to deliver far greater functionality than could otherwise be achieved. A quantum internet is envisioned as a general, scalable network that enables two or more quantum devices to exchange quantum information and share entanglement. It may operate over a range of length-scales from within a silicon chip to satellite links. 

This will enable secure communication, enhanced precision timing, scalable quantum computing and distributed sensing. A quantum internet is an ambitious next step for quantum technologies. This topic spans all four current national quantum hubs and progress requires scientific advances in interfacing disparate quantum systems and developing network protocols. 

Imperial has a diversity of expertise: our experimental quantum information science spans all major hardware platforms, including trapped ions, superconducting circuits, optomechanics, cold atoms and molecules, photonics, quantum dots, diamond and molecular thin films. There is also strong theory support for quantum and classical networks. Relevant current activities include entanglement generation, signal conversion, quantum memories, network synchronisation and network optimisation.