Two-species composite atomic clocks

Project: EU project

Project Details


Supporting the use of multi-species atomic clocks as future SI standards

Clocks and frequency standards are the most precise measurement devices available. While today’s best optical clocks rely on the use of a single atomic reference transition, two-species composite atomic clocks promise to achieve even better performance.

Project will focus on metrology research necessary to support the use of multi-species atomic clocks as future SI standards.

VTT MIKES investigates novel interrogation sequences for two-species, ion-based optical clocks, measures frequency shifts induced by laser radiation and assesses DC and AC Zeeman effects in single ion traps.

Call 2020: Fundamental Metrology

This project has received funding from the EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme.
Effective start/end date1/05/2130/04/24


  • EURAMET e.V.


  • atomic clock
  • optical clock
  • SI second


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