The LPL (CNRS – Sorbonne Paris Nord University) is very proud that this ambitious research project – which has been underway for over 20 years in collaboration with the LTE (Paris Observatory-PSL, CNRS, Sorbonne University, LNE), on the fibre-optic transmission of ultra-stable time-frequency signals. The news article can be found here (article published on 12 October 2026 in Le Monde).