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arXiv · 1110.4813

Multi-photon Rabi oscillations in high spin paramagnetic impurity

S. Bertaina·N. Groll·L. Chen·I. Chiorescu
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Abstract

We report on multiple photon monochromatic quantum oscillations (Rabi oscillations) observed by pulsed EPR (Electron Paramagnetic Resonance) of Mn$^{2+}$ (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.

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S. Bertaina, N. Groll, L. Chen, I. Chiorescu. 2011-10-21. Multi-photon Rabi oscillations in high spin paramagnetic impurity. https://doi.org/10.1088/1742-6596/324/1/012008

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