Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the discrimination between classical and quantum states   With the purpose to introduce a useful tool for researches concerning
foundations of quantum mechanics and applications to quantum technologies, here
we study three quantumness quantifiers for bipartite optical systems: one based
on sub-shot-noise correlations, one related to antibunching and one springing
from entanglement determination. The specific cases of parametric down
conversion seeded by thermal, coherent and squeezed states are discussed in
detail.

27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin