Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Excitation of the collective states in a three-qubit system   In the present paper, we have proposed the experimentally achievable method
for the characterization of the collective states of qubits in a linear chain.
We study temporal dynamics of absorption of a single-photon pulse by three
interacting qubits embedded in a one-dimensional waveguide. Numerical
simulations were performed for a Gaussian-shaped pulse with different frequency
detunings and interaction parameters between qubits. The dynamic behavior of
the excitation probability for each qubit is investigated. It was shown that
the maximum probability amplitudes of excitation of qubits are reached when the
frequency of external excitation coincides with the frequency of excitation of
the a corresponding eigenstate of the system. In this case, the the magnitude
of the probability amplitude of each qubit in the chain unambiguously
correlates with the contribution of this qubit to the corresponding collective
state of the system, and the decay of these amplitudes are determined by the
resonance width arising from the interaction of the qubit with the photon field
of the waveguide. Therefore, we show that the pulsed harmonic probe can be used
for the characterization of the energies, widths, and the wavefunctions of the
collective states in a one-dimensional qubit chain.

2
The categories of this paper are: math
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph