Our research

The Atomic Frequency Standards group at INRIM generates and maintains in Italy the unit of Time in the International System of Units (SI), i. e. the second (s). This is based on atomic transitions of the Caesium atom and is realised by a cryogenic Cs-fountain atomic clock. 

We conduct metrological research to develop better atomic clocks and better dissemination techniques for the unit of Time.  We are developing a more precise atomic clock based on neutral Yb atoms and are involved in the realization of compact atomic clocks based on Rubidium vapour cells with unprecedented performances. We are developing alternative techniques for the dissemination of frequency signals on a continental scale by using optical fibers.

All these tools enable the measurement of time and frequency at always improving precision, and will definitly open the door to new experiments in fundamental physics, spectroscopy, radioastronomy.