Satellite quantum communication
Alessandro Fedrizzi, Professor of Physics, Heriot-Watt University

Quantum communication provides a secure method to distribute encryption keys. The technology has matured considerably; early-stage systems are available commercially, and several regional quantum communication networks have been established. In terrestrial fibre networks, quantum communication distances are limited to a few hundred kilometres due to optical loss. The solution to reach global coverage is to inter-connect regional networks via satellite quantum links. In this talk I will review the status quo of satellite quantum communication, which despite its infancy has produced some spectacular results. I will then focus on UK programs, including the planned UK Quantum Communications Hub cube-sat demonstration and our quest for intercontinental quantum key distribution via the Canadian QEYSat mission.

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