Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-photon multi-quantum transitions in the spin-3/2 silicon-vacancy
  centers of SiC   Silicon vacancy centers in silicon carbide are promising candidates for
storing and manipulating quantum information. Implementation of fast quantum
gates is an essential requirement for quantum information processing. In a low
magnetic field, the resonance frequencies of silicon vacancy spins are in the
range of a few MHz, the same order of magnitude as the Rabi frequencies of
typical control fields. As a consequence, the rotating wave approximation
becomes invalid and nonlinear processes like the absorption and emission of
multiple photons become relevant. This work focuses on multi-photon transitions
of negatively charged silicon vacancies driven by a strong RF field. We present
continuous-wave optically detected magnetic resonance (ODMR) spectra measured
at different RF powers to identify the 1-, 2-, and 3-RF photon transitions of
different types of the silicon vacancy in the 6$H$-SIC polytype. Time-resolved
experiments of Rabi oscillations and free induction decays of these multiple RF
photon transitions were observed for the first time. Apart from zero-field
data, we also present spectra in magnetic fields with different strength and
orientation with respect to the system's symmetry axis.

22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat