Geodesy and metrology with a transportable optical clock - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Nature Physics Year : 2018

Geodesy and metrology with a transportable optical clock

Massimo Zucco
  • Function : Author
  • PersonId : 1002606


Optical atomic clocks, due to their unprecedented stability and uncertainty, are already being used to test physical theories and herald a revision of the International System of Units. However, to unlock their potential for cross-disciplinary applications such as relativistic geodesy, a major challenge remains: their transformation from highly specialized instruments restricted to national metrology laboratories into flexible devices deployable in different locations. Here, we report the first field measurement campaign with a transportable $^{87}$Sr optical lattice clock. We use it to determine the gravity potential difference between the middle of a mountain and a location 90 km away, exploiting both local and remote clock comparisons to eliminate potential clock errors. A local comparison with a $^{171}$Yb lattice clock also serves as an important check on the international consistency of independently developed optical clocks. This campaign demonstrates the exciting prospects for transportable optical clocks.
Fichier principal
Vignette du fichier
grott1.pdf (837.14 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

cea-01883759 , version 1 (06-01-2021)



Jacopo Grotti, Silvio Koller, Stefan Vogt, Sebastian Häfner, Uwe Sterr, et al.. Geodesy and metrology with a transportable optical clock. Nature Physics, 2018, 14 (5), pp.437 - 441. ⟨10.1038/s41567-017-0042-3⟩. ⟨cea-01883759⟩
515 View
74 Download



Gmail Facebook Twitter LinkedIn More