%0 Electronic Article
%A Prokhorov, Leonid
%A Smith, Aaron A.
%A Xu, Mingyao
%A Georgiou, Kostas
%A Guarrera, Vera
%A Kozhiparambil Sajith, Lakshmi P.
%A Dijck, Elwin A.
%A Warnecke, Christian
%A Wehrheim, Malte
%A Wilzewski, Alexander
%A Blackburn, Laura
%A Keller, Matthias
%A Boyer, Vincent
%A Pfeifer, Thomas
%A Schwanke, Ullrich
%A Issever, Cigdem
%A Worm, Steven
%A Schmidt, Piet O.
%A Crespo Lopez-Urrutia, José R.
%A Barontini, Giovanni
%T Coulomb crystallization of xenon highly charged ions in a laser-cooled Ca+ matrix
%M PUBDB-2025-05741
%D 2025
%Z submitted to PRL
%X We report on the sympathetic cooling and Coulomb crystallization of xenon highly charged ions (HCIs) with laser-cooled Ca+ ions. The HCIs are produced in a compact electron beam ion trap, then charge selected, decelerated, and finally injected into a cryogenic linear Paul trap. There, they are captured into 40Ca+ Coulomb crystals, and co-crystallized within them, causing dark voids in their fluorescence images. Fine control over the number of trapped ions and HCIs allows us to realize mixed-species crystals with arbitrary ordering patterns. By investigating Xeq+-Ca+ strings, we confirm the HCI charge states, measure their lifetime and characterize the mixed-species motional modes. Our system effectively combines the established quantum control toolbox for Ca+ with the rich set of atomic properties of Xe highly charged ions, providing a resourceful platform for optical frequency metrology, searches for signatures of new physics, and quantum information science.
%F PUB:(DE-HGF)25
%9 Preprint
%U https://bib-pubdb1.desy.de/record/642951