391 citations
- Systèmes de Référence Temps-EspaceFR20 papers
- Observatoire de ParisFR16 papers
- The University of Western AustraliaAU10 papers
- Laboratoire Temps EspaceFR8 papers
- Centre National de la Recherche ScientifiqueFR7 papers
- Istituto Nazionale di Ricerca MetrologicaIT6 papers
- Physikalisch-Technische BundesanstaltDE6 papers
- Sorbonne UniversitéFR5 papers
- National Metrology Institute of JapanJP4 papers
- National Physical LaboratoryGB4 papers
- Université Paris Sciences et LettresFR4 papers
- École Normale Supérieure - PSLFR3 papers
6 papers · 1 filter
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…
Roadmap towards the redefinition of the second
N. Dimarcq, M. Gertsvolf, G. Mileti +34
This paper outlines the roadmap towards the redefinition of the second, which was recently updated by the CCTF Task Force created by the CCTF in 2020. The main achievements and the…
Absolute frequency measurement with uncertainty below using International Atomic Time
Hidekazu Hachisu, Gérard Petit, Tetsuya Ido
The absolute frequency of the clock transition measured in 2015 was reevaluated using an improved frequency link to the SI second. The scale interval of Internation…
An accurate determination of the Avogadro constant by counting the atoms in a 28Si crystal
B. Andreas, Y. Azuma, G. Bartl +23
The Avogadro constant links the atomic and the macroscopic properties of matter. Since the molar Planck constant is well known via the measurement of the Rydberg constant, it is al…
From Optical Lattice Clocks to the Measurement of Forces in the Casimir Regime
Peter Wolf, Pierre Lemonde, Astrid Lambrecht +3
We describe a novel experiment based on atoms trapped close to a macroscopic surface, to study the interactions between the atoms and the surface at very small separations (0.6 to…
An optical clock with neutral atoms confined in a shallow trap
Pierre Lemonde, Peter Wolf
We study the trap depth requirement for the realization of an optical clock using atoms confined in a lattice. We show that site-to-site tunnelling leads to a residual sensitivity…