Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum Imaging beyond the Diffraction Limit by Optical Centroid
  Measurements   I propose a quantum imaging method that can beat the Rayleigh-Abbe
diffraction limit and achieve de Broglie resolution without requiring a
multiphoton absorber as the detector. Using the same non-classical states of
light as those for quantum lithography, the proposed method requires only
intensity measurements, followed by image post-processing, to produce the same
complex image patterns as those in quantum lithography. The method is expected
to be experimentally realizable using current technology.

6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom