Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Information Processing using coherent states in cavity QED   Using the highly detuned interaction between three-level $\Lambda$-type atoms
and coherent optical fields, we can realize the C-NOT gates from atoms to
atoms, optical fields to optical fields, atoms to optical fields and optical
fields to atoms. Based on the realization of the C-NOT gates we propose an
entanglement purification scheme to purify a mixed entangled states of coherent
optical fields. The simplicity of the current scheme makes it possible that it
will be implemented in experiment in the near future.

17
The categories of this paper are: q-fin
2
The categories of this paper are: math
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
1
The categories of this paper are: cs