Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transmission of Quantum Images Through Long Distances   We report on an experiment demonstrating the principle for transmitting
quantum images through long distances. Signal and idler beams carrying
correlated images have natural divergences that can be compensated by the use
of collimating lenses and at the same time preserving the information contained
in their correlated angular spectra.

12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int