Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deterministic generation of maximally discordant mixed states by
  dissipation   Entanglement can be considered as a special quantum correlation, but not the
only kind. Even for a separable quantum system, it is allowed to exist
non-classical correlations. Here we propose two dissipative schemes for
generating a maximally correlated state of two qubits in the absence of quantum
entanglement, which was raised by [F. Galve, G. L. Giorgi, and R. Zambrini,
{\color{blue}Phys. Rev. A {\bf 83}, 012102 (2011)}]. These protocols take full
advantages of the interaction between four-level atoms and strongly lossy
optical cavities. In the first scenario, we alternatively change the phases of
two classical driving fields, while the second proposal introduces a strongly
lossy coupled-cavity system. Both schemes can realize all Lindblad terms
required by the dissipative dynamics, guaranteeing the maximally quantum
dissonant state to be the unique steady state for a certain subspace of system.
Moreover, since the target state is a mixed state, the performance of our
method is evaluated by the definition of super-fidelity $G(\rho_{1},\rho_{2})$,
and the strictly numerical simulations indicate that fidelity outstripping
$99\%$ of the quantum dissonant state is achievable with the current cavity
quantum electrodynamics parameters.

7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg