9th Symposium on Frequency Standards and Metrology

Session

SI Definition, Clocks and Time Scales I

17 Oct 2023, 11:00

Kingscliff, NSW, Australia

Conveners

SI Definition, Clocks and Time Scales I

• Patrizia Tavella

170. The roadmap to the redefinition of the SI second

Patrizia Tavella

17/10/2023, 11:00

SI definition, Clocks and Time Scales

Invited Oral

The Consultative Committee for Time and Frequency (CCTF) established a Task Force [1] in 2020 to update the roadmap towards the redefinition of the SI second, following a first roadmap agreed in 2016. This paper illustrates the work of the entire task force [2] formed by about 40 people repre-senting the CCTF countries, with some additional experts.

149. Optically Steered Time Scale Generation at OP and NPL and Remote Comparisons

Michel Abgrall (LNE-SYRTE, Observatoire de Paris)

17/10/2023, 11:30

SI definition, Clocks and Time Scales

Invited Oral

We will present real-time optically steered timescales generated at the same time at OP and NPL. After a detailed description of the experimental chains, we will present the implemented algorithms for outlier filtering and frequency steering estimations. We will then analyse the performance of the experimental timescales based on local comparison against the local UTC(k) and remote comparisons...

150. A computable Hydrogen optical lattice Clock

Prof. Thomas Udem (Max-Planck Institute for Quantum Optics)

17/10/2023, 12:00

SI definition, Clocks and Time Scales

Invited Oral

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