Building the world’s most secure fixed-mobile network

The focus of the project was on the last mile of the telecommunications network that delivers services to customers, for example, the cell towers linking local mobile phones to the cellular network.

The project aimed to create a complete supply chain from component manufacture to 5G devices and connected cars.

It combined QKD over fixed fibre and free-space networks (point-to-point laser connections between cell sites) with quantum-enhanced security chips in mobile devices.

The project utilised BT’s current fibre-based testbed for QKD, which runs between Cambridge and the BT Labs at Adastral Park, Suffolk.

Cambridge-based Nu Quantum provided quantum components such as small modules capable of manipulating single photons of light to generate and communicate secure quantum encryption keys.

Warwick University Manufacturing Group demonstrated QKD between mobile roadside units and vehicles. CSA Catapult assisted the fabrication of the devices alongside Bay Photonics.

CSA Catapult also defined value propositions for the quantum components, identified key stakeholders across the supply chain, and defined market opportunity and engagement routes.