Time/Frequency and Optical Metrology

Image LTF

The Time-Frequency and Optical Metrology Centre explores and pushes the frontiers in time and frequency measurement, photonics, and optical metrology. For these purposes, the Centre brings together more than 25 researchers who have a strong collective experience in various areas of metrology and photonics, such as the development and evaluation of optical frequency combs, primary atomic clocks, compact atomic frequency standards, as well as stabilized and ultrafast lasers.

The Centre receives strong support from the Swiss Confederation and prestigious external funding. For example, its collaborators are involved in research funded by the European Community for the development of optical frequency combs in the extreme ultra-violet based on high harmonic generation, as well as for the European Space Agency (ESA) spanning from the quest for ultimate precision using atomic clocks to the development of stabilized lasers for environmental monitoring from space-borne differential LIDAR instruments. They are also working on novel ultrafast laser technologies for frequency combs and new atomic clocks that should allow positioning resolution down to the meter in the European Galileo global navigation satellite system. Via various projects the Centre is collaborating with local and national specialized industry, thus supporting technology transfer and promoting innovation.

Further information

Watch the video


24-28.04.2022 : EFTF-IFCS, Paris (France)


13-18.02.2022 : European Microwave Week 2022, London (UK)


25-27.01.2022 : PTTI Meeting, Long Beach, CA (USA)


13-17.09.2021 : EOSAM 2021, European Optical Society Annual Meeting, Rome, Italy


30.08 03.09.2021 : ETH Workshop 2021 : Time in Quantum Theory


07-17.07.2021 : EFTF-IFCS 2021, Virtual Conference



27.09.2021 : Cycle de conférence, La mesure du temps, hier, aujourd'hui et demain, Dr Salomon, Unimail, Neuchâtel (photos et vidéo 1 et 2)


The watchmaking know-how of the canton of Neuchâtel and the Time-Frequency Laboratory (LTF) : interview 1 et 2


05.05.2021 L'Observatoire cantonal de Neuchâtel a vécu de 1858 à 2007, interview du Professeur Mileti


22.04.2021 Etienne Batori wins the UniNE preselection of ma thèse en 180 sécondes.

Watch Etienne's performance

Watch the full event



05.04.2021 : C'est quoi une onde ? Emission CQFD, RTS


10.11.2020 : Neuchâtel, Capitale mondiale de la mesure du temps, RTS couleurs locales


08.09.2020 : Precision Timing in Navigation, organised by ION-CH in collaboration with IEEE AES, the Time and Frequency Laboratory (LTF) et CSEM



Prof. Gaetano Mileti (LTF)


Dr. Christoph Affolderbach (LTF)


Etienne Batori, PhD (LTF)


Observatoire cantonal de Neuchâtel





04.03.2020 : L'Université de Neuchâtel au défi de créer une horloge atomique miniaturisée (RTS le 19:30, 04.03.2020)


03.03.2020 : Horloges pour l'espace : nouveau contrat de haut vol


01.02.2020 : Gaetano Mileti, horloger de l'espace, Journal Arcinfo


22.01.2020 : Come misurare il tempo oggi ? Interview of Professor Gaetano Mileti, Rete Uno


16.12.2019 : Réflexions et débat autour de la précision horlogère, MIH, La Chaux-de-Fonds


Concours de chronométrie4.jpg



Concours de chronométrie1.jpg


Concours de chronométrie2.jpg

Photos de M. Pierre-W. Henry


14.11.2019 : L'Institut de Physique a participé à la journée Futur en tous genres, Institut de Physique (LTF), Neuchâtel