Coherent laser spectroscopy of highly charged ions using quantum logic

verfasst von
Peter Micke, Tobias Leopold, Steven A. King, Erik Benkler, L. J. Spieß, Lisa Schmöger, Maria Schwarz, José R. Crespo López-Urrutia, Piet O. Schmidt
Abstract

Precision spectroscopy of atomic systems1 is an invaluable tool for the study of fundamental interactions and symmetries2. Recently, highly charged ions have been proposed to enable sensitive tests of physics beyond the standard model2–5 and the realization of high-accuracy atomic clocks3,5, owing to their high sensitivity to fundamental physics and insensitivity to external perturbations, which result from the high binding energies of their outer electrons. However, the implementation of these ideas has been hindered by the low spectroscopic accuracies (of the order of parts per million) achieved so far6–8. Here we cool trapped, highly charged argon ions to the lowest temperature reported so far, and study them using coherent laser spectroscopy, achieving an increase in precision of eight orders of magnitude. We use quantum logic spectroscopy9,10 to probe the forbidden optical transition in 40Ar13+ at a wavelength of 441 nanometres and measure its excited-state lifetime and g-factor. Our work unlocks the potential of highly charged ions as ubiquitous atomic systems for use in quantum information processing, as frequency standards and in highly sensitive tests of fundamental physics, such as searches for dark-matter candidates11 or violations of fundamental symmetries2.

Organisationseinheit(en)
Institut für Quantenoptik
QuantumFrontiers
SFB 1227: Designte Quantenzustände der Materie (DQ-mat)
Externe Organisation(en)
Physikalisch-Technische Bundesanstalt (PTB)
Max-Planck-Institut für Kernphysik
Typ
Artikel
Journal
NATURE
Band
578
Seiten
60-65
Anzahl der Seiten
6
ISSN
0028-0836
Publikationsdatum
06.02.2020
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Allgemein
Elektronische Version(en)
https://doi.org/10.48550/arXiv.2010.15984 (Zugang: Offen)
https://doi.org/10.1038/s41586-020-1959-8 (Zugang: Geschlossen)