LKB - Trapped Ions Metrology

Trapped Ions Group

The group’s activity is centered on precision measurements with cold trapped ions. In particular, the simplest of all molecules, the H2+ ion, is studied both experimentally and theoretically. The general aim of this research is to test fundamental theories and improve our knowledge of fundamental physical constants.


Recent Papers

Proton-electron mass ratio from laser spectroscopy of HD+ at the part-per-trillion level

S. Patra, M. Germann, J.-Ph. Karr, M. Haidar, L. Hilico, V. I. Korobov, F. M. J. Cozijn, K. S. E. Eikema, W. Ubachs, J. C. J. Koelemeij

Science, 30 July 2020

Hyperfine structure in the H2+ and HD+ molecular ions at mα6 order

V.I. Korobov, J.-Ph. Karr, M. Haidar, Z.-X. Zhong

arxiv:2006.02691, 2020

Pourquoi et comment peser l’antimatière ?

Y. Sacquin, L. Hilico

Reflets Physique 65, 12, 2020


Filter Categories
PhD Student
  • Albane Douillet
    Associate Professor
  • Jean-Philippe Karr
    Associate Professor
  • Laurent Hilico
  • Group
    Trapped Ions Group
  • Thomas Louvradoux
    PhD Student
  • Mohammad Haidar
    PhD Student
  • Julian Schmidt

We are always looking for brillant motivated scientists to join our group.

Check the open positions or send us your CV for application.




Laboratoire Kastler Brossel, 4 place Jussieu, Case 74, 75252 Paris Cedex 05



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