Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-linear magneto-optic and self polarization rotation by superposition
  of states   We report the observation of enhanced magneto-optic rotation as the coherent
superposition of different hyperfine states is established in an atomic sample.
The polarization rotation near the two photon Raman resonance condition appears
to have an analogous characteristic to the well established Faraday rotation
observed in the vicinity of a single photon resonance, however it contains
sharp features arising from coherent population trapping state. The profile of
the two photon rotation signal exhibits interesting features for slightly
imbalanced circular polarization component of the laser field as well as for on
and away from the single photon resonance. The investigation can be used to
explore the effect of superposition states generated by coherent population
trapping on optical activity. A complete density matrix based numerical
simulation that consistently captures all the relevant features of the
experiment is presented.

22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph