Tailored optical clock transition in 40Ca+

L. Pelzer, K. Dietze, J. Kramer, F. Dawel, L. Krinner, N. Spethmann, V. Martinez, N. Aharon, A. Retzker, K. Hammerer, P. O. Schmidt

Research output: Contribution to journalArticlepeer-review


We engineer an artificial optical clock transition in 40Ca+ with a continuous dynamical decoupling scheme. It suppresses inhomogeneous tensor shifts as well as the linear Zeeman shift, making it suitable for multi-ion operation. Coherence times approaching the natural lifetime limit ensure low statistical uncertainties on the optical transition. We continuously apply the dressing fields, making the tailored transition robust against magnetic field fluctuations during the entire clock probe time.

Original languageAmerican English
Article number100326
JournalMeasurement: Sensors
StatePublished - Dec 2021


  • Dynamic decoupling
  • Multi-ion clock
  • Optical ion clock
  • Quadrupole shift

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials
  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering


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