9th Symposium on Frequency Standards and Metrology

171Yb+ optical clock at NPL for frequency metrology and tests of fundamental physics

16 Oct 2023, 16:00

30m

Kingscliff, NSW, Australia

Invited Oral Molecular, Atomic, Ion and Nuclear Clocks Optical Ion Clocks II

Speaker

Anne Curtis

Description

We will report on absolute E3 frequency measurements and E3/E2 optical frequency ratio measurements in $^{171}$Yb$^+$, local $^{171}$Yb$^+$/ $^{87}$Sr clock frequency ratios, related uncertainty budgets, and improvements in automation and robust operation of the $^{171}$Yb$^+$ clock system at NPL. We will also show how these measurement results have been used to constrain temporal variation of the fine structure constant and exclude regions of parameter space in theories beyond the Standard Model, such as those which include ultralight scalar dark matter.

Presentation materials

CurtisNPL_Abstract_9FSM.pdf