Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Entanglement, Teleportation, And Single Photon Storage Using Two Level
  Atoms Inside An Optical Parametric Oscillator   I consider several interesting aspects of a new light source, a two-level
atom, or N two-level atoms inside an Optical Parametric Oscillator. We find
that in the weak driving limit, detection of a transmitted or fluorescent
photon generates a highly entangled state of the atom and the cavity. This
entanglement can be used with beamsplitters to create more complex quantum
states and implement teleportation protocols. Also, one can store a single
photon in the atoms, along the lines of recent slow and stopped light proposals
and experiments.

36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
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
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics