Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum dynamics of the small-polaron formation in a superconducting
  analog simulator   We propose a scheme for investigating the nonequilibrium aspects of
small-polaron physics using an array of superconducting qubits and microwave
resonators. This system, which can be realized with transmon or gatemon qubits,
serves as an analog simulator for a lattice model describing a nonlocal
coupling of a quantum particle (excitation) to dispersionless phonons. We study
its dynamics following an excitation-phonon (qubit-resonator) interaction
quench using a numerically exact approach based on a Chebyshev-moment expansion
of the time-evolution operator of the system. We thereby glean heretofore
unavailable insights into the process of the small-polaron formation resulting
from strongly momentum-dependent excitation-phonon interactions, most
prominently about its inherent dynamical timescale. To further characterize
this complex process, we evaluate the excitation-phonon entanglement entropy
and show that initially prepared bare-excitation Bloch states here dynamically
evolve into small-polaron states that are close to being maximally entangled.
Finally, by computing the dynamical variances of the phonon position and
momentum quadratures, we demonstrate a pronounced non-Gaussian character of the
latter states, with a strong antisqueezing in both quadratures.

32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex