Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-Mode Parametric-Down-Conversion States with 50 Photons as a
  Source for Mesoscopic Quantum Optics   We generate pulsed, two mode squeezed states in a single spatio-temporal mode
with mean photon numbers up to 20. We directly measure
photon-number-correlations between the two modes with transition edge sensors
up to 80 photons per mode. This corresponds roughly to a state-dimensionality
of 6400. We achieve detection efficiencies of 64% in the technologically
crucial telecom regime and demonstrate the high quality of our measurements by
heralded nonclassical distributions up to 50 photons per pulse and calculated
correlation functions up to 40th order.

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The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga