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


Conference cycle "Temps, sciences et société"

28.05.2019, 18h: Estefanía de Mirandés, BIPM: La révision du système international d'unités

06-07.06.2019, SNC 2019-Swiss NanoConvention, EPFL, Lausanne


17-20.06.2019, PIERS-2019, Roma, Italy


20.06.2019 : Conference on ultra-precise time measurement, Musée de l'Ancienne Poste, Le Locle


23-27.06.2019, CLEO-Europe 2019, Munich, Germany


05.07.2019, WCSJ 2019, Time, Switzerland's iconic resource, Neuchâtel


Visits animation in 2019 from 12h15 to 12h45 during the exhibition Sur le coup de midi!, MIH, La Chaux-de-Fonds :


* 05.06.2019 : +/- 0,00001 second per day - the cesium atom in the atomic clock

* 02.10.2019 : +/- 0.000001 second per day - hydrogen clocks

* 06.11.2019 : +/- 0.000000001 second per day - cesium fountain clocks

* 04.12.2019 : +/- 0.00000000001 second per day - optical clocks



Journeeneuchateloise20.jpg Journée neuchâteloise in Swiss federal parliament on 5 march 2019. Press release


Autopsie d'un smartphone, article in the En Direct newspaper, no 280 from january-february 2019


Salon Internation de la Haute Horlogerie (SIHH), Geneva, talk from Prof. Gaetano Mileti, 16.01.2019


Une horloge suisse parmi les diapasons du temps universel, Communiqué de l'Institut fédéral de métrologie METAS, 17.12.2018


Notre avenir quantique se dessine à Neuchâtel : interview du Prof. Gaetano Mileti sur rtn, 30.10.2018


Le projet MacQsimal : interview du Prof. Gaetano Mileti sur radioLAC, 30.10.2018


Start of the European Quantum Flagship on 29.10.2018: press release on the MacQsimal project with LTF participation.


Il invente le laser le plus puissant du monde, reportage sur Canal Alpha, 02.08.2018