Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of Rabi oscillation of light assisted by atomic spin wave   Coherent conversion between a Raman pump field and its Stokes field is
observed in a Raman process with a strong atomic spin wave initially prepared
by another Raman process operated in the stimulated emission regime. The
oscillatory behavior resembles the Rabi oscillation in atomic population in a
two-level atomic system driven by a strong light field. The Rabi-like
oscillation frequency is found to be related to the strength of the pre-built
atomic spin wave. High conversion efficiency of 40% from the Raman pump field
to the Stokes field is recorded and it is independent of the input Raman pump
field. This process can act as a photon frequency multiplexer and may find wide
applications in quantum information science.

4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con