Augmentation of Future Quantum Key Distribution Networks with CubeSat Systems

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CubeSats (nanosatellites of mass <10kg, with dimensions 10-40 cm in length) offer a cost-effective and rapidly deployed opportunity to provide both proof-of-concept to a wide market and technology raising. In some instances they are also part of the final service delivery, for example, in the case of Planet, who augment larger satellites with CubeSats for responsive Earth observation. This feasibility study seeks to determine the extent to which the momentum and agility of the CubeSat marketplace, and the progress made in overall performance, can be applied and aligned to support and capitalise on the emergence of space-based Quantum Key Distribution, harnessing the developments already underway within the UK in payload systems. QKD offers a highly secure method for key distribution that is critical to modern data systems security, from financial transactions to military communications. The work will inform mission architecture, interface specification, system testing and development roadmaps, and further provide a systems-view across stakeholders. The approach will identify opportunities to accelerate and augment the technology or service readiness of space-based QKD using CubeSats.