Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement with phase decoherence   The system of an atom couples to two distinct optical cavities with phase
decoherence is studied by making use of a dynamical algebraic method. We adopt
the concurrence to characterize the entanglement between atom and cavities or
between two optical cavities in the presence of the phase decoherence. It is
found that the entanglement between atom and cavities can be controlled by
adjusting the detuning parameter. Finally, we show that even if the atom is
initially prepared in a maximally mixed state, it can also entangle the two
mode cavity fields.

37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org