Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of tripartite entanglement   Maximally entangled states are of utmost importance to quantum communication,
dense coding, and quantum teleportation. With a trapped ion placed inside a
high finesse optical cavity, interacting with field of an external laser and
quantized cavity field, a scheme to generate a maximally entangled three qubit
GHZ state, is proposed. The dynamics of tripartite entanglement is
investigated, using negativity as an entanglement measure and linear entropy as
a measure of mixedness of a state. It is found that (a) the number of modes
available to the subsystem determines the maximum entanglement of a subsystem,
b) at entanglement maxima and minima, linear entropy and negativity uniquely
determine the nature of state, but the two measures do not induce the same
ordering of states, and c) for a special choice of system parameters maximally
entangled tripartite two mode GHZ state is generated. The scheme presented for
GHZ state generation is a single step process and is reduction free.
  PACS: 03.67.-a, 42.50.-p, 03.67.Dd

37
The categories of this paper are: supr-con
23
The categories of this paper are: solv-int
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
19
The categories of this paper are: eess
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat