16–20 Oct 2023
Kingscliff, NSW, Australia
Australia/Sydney timezone

A definition of the SI second based on several optical transitions

18 Oct 2023, 09:00
30m
Kingscliff, NSW, Australia

Kingscliff, NSW, Australia

Mantra on Salt Beach Kingscliff, Tweed Coast Gunnamatta Avenue, Kingscliff NSW
Invited Oral SI definition, Clocks and Time Scales SI Definition, Clocks and Time Scales II

Speaker

Jérôme Lodewyck (LNE-SYRTE Observatoire de Paris)

Description

In this paper, we discuss the possibility to redefine the SI second using the geometric mean of several optical clock transitions. This definition would allow to take advantage of the many high performance optical frequency standards currently available.
Here, we describe the fundamental properties of this definition and its practical implementation. Finally, we discuss its strengths and weakness, as compared to a definition involving a single transition.

Author

Jérôme Lodewyck (LNE-SYRTE Observatoire de Paris)

Presentation materials