Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Various angle periods of parabolic coincidence fringes in violation of
  Bell inequality with high-dimensional two-photon entanglement   Two quantum states of two half-charge optical vortexes with relative
azimuthal angle {\pi} are orthogonal, by which two half-charge spiral phase
plates with intersection angle {\pi} can be used to demonstrate a parabolic
coincident fringe in the Bell inequality experiment with high-dimensional
two-photon orbital angular momentum entanglement and to thereby obtain a strong
Bell parameter of 3.2. I theoretically demonstrate various orthogonal relations
between two quantum states, each of which is a state with a rotational symmetry
superposition made up of n fractional orbital angular momentum states, where n
is N. I propose a Bell inequality experiment with two n-section spiral phase
plates that have these two quantum states, whereby various angle periods with
parabolic coincident fringes 2{\pi}/n and Bell's parameter 3.2 in each period
can be obtained.

35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat