Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum spatial superresolution by optical centroid measurements   Quantum lithography (QL) has been suggested as a means of achieving enhanced
spatial resolution for optical imaging, but its realization has been held back
by the low multi-photon detection rates of recording materials. Recently, an
optical centroid measurement (OCM) procedure was proposed as a way to obtain
spatial resolution enhancement identical to that of QL but with higher
detection efficiency (M. Tsang, Phys. Rev. Lett. 102, 253601, 2009). Here we
describe a variation of the OCM method with still higher detection efficiency
based on the use of photon-number-resolving detection. We also report
laboratory results for two-photon interference. We compare these results with
those of the standard QL method based on multi-photon detection and show that
the new method leads to superresolution but with higher detection efficiency.

4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg