We performed quantum manipulations of the multi-level spin system S=5/2 of a Mn2+ ion, by means of a two-tone pulse drive. The detuning between the excitation and readout radio frequency pulses allows one to select the number of photons involved in a Rabi oscillation as well as increase the frequency of this nutation. Thus detuning can lead to a resonant multi-photon process. Our analytical model for a two-photon process as well as a numerical generalization fit well the experimental findings, with implications in the use of multi-level spin systems as tunable solid state qubits.
@article{arxiv.1505.03649,
title = {Resonant single and multi-photon coherent transitions in a detuned regime},
author = {S. Bertaina and M. Martens and M. Egels and D. Barakel and I. Chiorescu},
journal= {arXiv preprint arXiv:1505.03649},
year = {2015}
}