Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optical squeezing for an optomechanical system without quantising the
  mechanical motion   Witnessing quantumness in mesoscopic objects is an important milestone for
both quantum technologies and foundational reasons. Cavity optomechanics offers
the ideal system to achieve this by combing high precision optical measurements
with mechanical oscillators. However, mechanical quantumness can only be
established if the behaviour is incompatible with any classical description of
an oscillator. After explicitly considering classical and hybrid
quantum-classical descriptions of an optomechanical system, we rule out
squeezing of the optical field as such a witness by showing it is also
predicted without quantizing the mechanical oscillator.

27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
10
The categories of this paper are: q-bio