Chip-based quantum key distribution

At KETS we develop quantum key distribution (QKD) systems that enable secure communication, resistant to quantum computer attacks. Adoption of QKD has been limited by cost and bulky fibre-based solutions. To overcome these barriers, we created chip-based QKD using photonic integrated circuits manufactured in commercial foundries. We integrate quantum signal generation, detection, and quantum random number generation onto compact chips using platforms like silicon-on-insulator and indium phosphide. Our latest breakthrough combines receiver chips with single-photon detectors, overcoming the last remaining miniaturization challenges. This allows us to deliver scalable, cost-effective QKD systems and advance large-scale quantum-secure networks and future quantum internet applications.

Francesco pursued a PhD at the Quantum Engineering & Technology Labs, University of Bristol (2018), with a thesis on quantum random number generators on photonic integrated circuits. After the PhD, Francesco joined KETS Quantum Security, to develop chip-based quantum cryptography solutions. In 2022 Francesco was awarded a UKRI Future Leaders Fellowship, and he is now Chief Technology Officer at KETS Quantum Security where he oversees the development of the company’s core technologies.