Motional resonances of three-dimensional dual-species Coulomb crystals

Byoung Moo Ann, Fabian Schmid, Jonas Krause, Theodor W. Hansch, Thomas Udem, Akira Ozawa

Research output: Contribution to journalArticleScientificpeer-review


We investigate the motional resonances of dual-species Coulomb crystals comprised of 9Be+ and 24Mg+ ions held in a 4-rod linear Paul trap. Our experimental data and simulations show that the secular motion of such mixed crystals has rich dynamics. Their secular spectra can differ significantly from those of pure ion crystals. We propose a simple model based on mechanical coupling with Coulomb interactions between the two different ion species that explains many features of the secular spectrum. Our findings contribute to a more reliable identification of the ion species in mixed crystals.

Original languageEnglish
Article number035002
Number of pages10
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number3
Publication statusPublished - 2019
Externally publishedYes


  • Coulomb crystals
  • ion traps
  • secular motion


Dive into the research topics of 'Motional resonances of three-dimensional dual-species Coulomb crystals'. Together they form a unique fingerprint.

Cite this