Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum enhanced X-ray detection   We present the first experimental demonstration of quantum-enhanced detection
at x-ray wavelengths. We show that x-ray pairs that are generated by
spontaneous down-conversion can be used for the generation of heralded x-ray
photons and measure directly the sub-Poissonian statistics of the single
photons by using photon number resolving detectors. We utilize the properties
of the strong time-energy correlations of the down converted photons to
demonstrate the ability to improve the visibility and the signal-to-noise ratio
of an image with a small number of photons in an environment with a noise level
that is higher than the signal by many orders of magnitude. In our work we
demonstrate a new protocol for the measurement of quantum effects with x-rays
using advantages such as background free measurements that the x-ray regime
offers for experiments aiming at testing fundamental concepts in quantum
optics.

26
The categories of this paper are: bayes-an
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci