Metrology for quantum communications

Industrial technologies based on the production, manipulation, and detection of single and entangled photons are emerging, and quantum key distribution via optical fibre is one of the most commercially-advanced. The National Physical Laboratory is developing traceable performance metrology for the quantum devices used in these technologies. This is part of a broader effort to develop metrological techniques and standards to accelerate the development and commercial uptake of new industrial quantum communication technologies based on single photons. This presentation will give an overview of the work carried out at NPL and within the wider European community, and highlight plans for the future.