Applied Physics B

, Volume 71, Issue 2, pp 207–210

Isotope selective loading of an ion trap using resonance-enhanced two-photon ionization

  • N. Kjaergaard
  • L. Hornekaer
  • A.M. Thommesen
  • Z. Videsen
  • M. Drewsen

DOI: 10.1007/s003400000296

Cite this article as:
Kjaergaard, N., Hornekaer, L., Thommesen, A. et al. Appl Phys B (2000) 71: 207. doi:10.1007/s003400000296

Abstract.

We have demonstrated that resonance-enhanced two-photon ionization of atomic beams provides an effective tool for isotope selective loading of ions into a linear Paul trap. Using a tunable, narrow-bandwidth, continuous wave (cw) laser system for the ionization process, we have succeeded in producing Mg+ and Ca+ ions at rates controlled by the atomic beam flux, the laser intensity, and the laser frequency detuning from resonance. We have observed that with a proper choice of control parameters, it is rather easy to load a specific number of ions into a string. This observation has direct applications in quantum optics and quantum computation experiments. Furthermore, resonant photo-ionization loading facilitates the formation of large isotope-pure Coulomb crystals.

PACS: 32.80.Rm; 32.80.Pj; 42.50.-p

Copyright information

© Springer-Verlag 2000

Authors and Affiliations

  • N. Kjaergaard
    • 1
  • L. Hornekaer
    • 1
  • A.M. Thommesen
    • 1
  • Z. Videsen
    • 1
  • M. Drewsen
    • 1
  1. 1.Institute of Physics and Astronomy, Aarhus University, 8000 Aarhus C, Denmark (E-mail: nielskj@ifa.au.dk)DK