Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment on "Unity-Efficiency Parametric Down-Conversion via Amplitude
  Amplification" [arXiv:1603.06857]   There is a serious flaw in the proposal [arXiv:1603.06857] for the
achievement of unity efficiency in SPDC. This is a replacement due to mistakes
in the table of probabilities. Numbers have been corrected.

25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
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The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
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The categories of this paper are: stat
21
The categories of this paper are: adap-org
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The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga