Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Towards single-cycle squeezing in chirped quasi-phase-matched optical
  parametric down-conversion   We propose a method for generation of a single-cycle squeezed light by
parametric down-conversion in a chirped quasi-phase-matched nonlinear crystal.
We find an exact quantum solution for this process valid for an arbitrary
parametric gain, and discover an ultrabroadband squeezing in the down-converted
light with flat squeezing spectrum comprising the full optical octave. We
describe a scheme for observation of this kind of squeezing using
second-harmonic generation as an ultrafast correlator.

2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
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The categories of this paper are: nucl-th
7
The categories of this paper are: hep-th