Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Frequency-tunable circular polarization beam splitter using a
  graphene-dielectric sub-wavelength film   Manipulating the circular polarization of light is of great importance in
chemistry and biology, as chiral molecules exhibit different physiological
properties when exposed to different circularly polarized waves. Here we
suggest a graphene/dielectric-stacked structure, which has both the properties
of a epsilon-near-zero material and the high Hall conductivity of graphene. The
proposed sub-wavelength structure demonstrates efficient manipulation of
circular polarization properties of light. In a quite broad frequency range and
at a large oblique incidence angle, the present magnetically active structure
is transparent for one circularly polarized wave, and opaque for another. Such
an effect can be further tuned by changing the magnitude of the applied
magnetic field and chemical potential of graphene.

13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int