Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A classical postselected weak amplification scheme via thermal light
  cross-Kerr effect   In common sense, postselected weak amplification must be related to
destructive interference effect of the meter system, and a single photon exerts
no effect on thermal field via cross-phasemodulation (XPM) interaction. In this
Letter we present, for the first time, a thermal light cross-Kerr effect.
Through analysis, we reveal two unexpected results: i) postselection and weak
amplification can be explained at a classical level without destructive
interference, and ii) weak amplification and weak value are not one thing.
After postselection a new mixed light can be generated which is nonclassical.
This scheme can be realized via electromagnetically-induced transparency.

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The categories of this paper are: atom-ph
1
The categories of this paper are: cs
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph