activity
20022026
most citedFrequency ratio of two optical clock transitions in Yb and constraints on the time-variation of fundamental constants

467 citations · 990 across the 20 of their papers we have counts for

collaborators

20 papers

physics.atom-ph2026★ 1 cited

International Optical Clock Comparison Using the European Optical Fiber Network

Marco Pizzocaro, Clara Zyskind, Anne Amy-Klein +41

Optical clocks have achieved remarkable estimated fractional frequency uncertainties reaching the level and below, enabling applications in fundamental physics, general…

physics.atom-ph2025★ 18 cited

Coordinated international comparisons between optical clocks connected via fiber and satellite links

Thomas Lindvall, Marco Pizzocaro, Rachel M. Godun +62

Optical clocks provide ultra-precise frequency references that are vital for international metrology as well as for tests of fundamental physics. To investigate the level of agreem…

physics.atom-ph2024★ 35 cited

Yb optical clock with systematic uncertainty and absolute frequency measurements

Alexandra Tofful, Charles F. A. Baynham, E. Anne Curtis +9

A full evaluation of the uncertainty budget for the ytterbium ion optical clock at the National Physical Laboratory (NPL) was performed on the electric octupole (E3) $^2\mathrm{S}_…

physics.atom-ph2023

Analysis of atomic-clock data to constrain variations of fundamental constants

Nathaniel Sherrill, Adam O. Parsons, Charles F. A. Baynham +13

We present a new framework to study the time variation of fundamental constants in a model-independent way. Model independence implies more free parameters than assumed in previous…

hep-ph2021★ 65 cited

Measuring the stability of fundamental constants with a network of clocks

G. Barontini, L. Blackburn, V. Boyer +41

The detection of variations of fundamental constants of the Standard Model would provide us with compelling evidence of new physics, and could lift the veil on the nature of dark m…

hep-ph2021★ 3 cited

QSNET, a network of clocks for measuring the stability of fundamental constants

G. Barontini, V. Boyer, X. Calmet +19

The QSNET consortium is building a UK network of next-generation atomic and molecular clocks that will achieve unprecedented sensitivity in testing variations of the fine structure…