Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multiphoton interaction of a qutrit with single-mode quantized field in
  the ultrastrong and deep strong coupling regimes   We consider multiphoton dynamics of a quantum system composed of a
three-state atom (a qutrit) and a single-mode photonic field in the ultrastrong
and deep strong coupling regimes, when the coupling strength is comparable to
or larger than the oscillator energy scale. We assume a qutrit to be in a
polar-$\Lambda $ configuration in which two lower levels have mean dipole
moments. Direct multiphoton resonant transitions revealing generalized Rabi
oscillations, collapse, and revivals in atomic excitation probabilities for the
ultrastrong couplings are studied. In the deep strong coupling regime
particular emphasis is placed on the ground state of considering system which
exhibits strictly nonclassical properties.

15
The categories of this paper are: nucl-ex
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The categories of this paper are: stat
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
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The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat