We report on multiple photon monochromatic quantum oscillations (Rabi oscillations) observed by pulsed EPR (Electron Paramagnetic Resonance) of Mn2+ (S=5/2) impurities in MgO. We find that when the microwave magnetic field is similar or large than the anisotropy splitting, the Rabi oscillations have a spectrum made of many frequencies not predicted by the S=1/2 Rabi model. We show that these new frequencies come from multiple photon coherent manipulation of the multi-level spin impurity. We develop a model based on the crystal field theory and the rotating frame approximation, describing the observed phenomenon with a very good agreement.
@article{arxiv.1110.4813,
title = {Multi-photon Rabi oscillations in high spin paramagnetic impurity},
author = {S. Bertaina and N. Groll and L. Chen and I. Chiorescu},
journal= {arXiv preprint arXiv:1110.4813},
year = {2011}
}
Comments
International Conference: Resonance in Condensed Matter Altshuler 100