Quantum Key Distribution (QKD) Experimental Assessment: Overview and performance assessment of QTI Quell-X system at JRC

JRC report (EUR 40111, Cerutti, Lewis, Scudo and Travagnin) assessing the Quell-X fibre QKD system made by the Italian start-up Quantum Telecommunications Italy, installed at the JRC in February 2024. The system, which uses a BB84 variant with attenuated laser pulses, was tested in the lab and on site fibres; results are given for several link lengths and losses, to strengthen JRC support for coordinating EuroQCI.

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