Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum coherence and entanglement preservation in Markovian and
  non-Markovian dynamics via additional qubits   In this paper, we investigate preservation of quantum coherence of a
single-qubit interacting with a zero-temperature thermal reservoir through the
addition of noninteracting qubits in the reservoir. Moreover, we extend this
scheme to preserve quantum entanglement between two and three distant qubits,
each of which interacts with a dissipative reservoir independently. At the long
time limit, we obtained analytical expressions for the coherence measure and
the concurrence of two and three qubits in terms of the number of additional
qubits. It is observed that, by increasing the number of additional qubits in
each reservoir, the initial coherence and the respective entanglements are
completely protected in both Markovian and non-Markovian regimes.
Interestingly, the protection of entanglements occurs even under the
individually different behaviors of the reservoirs.

10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
3
The categories of this paper are: physics
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci