Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sufficiency of quantum non-Gaussianity for discrete-variable quantum key
  distribution over noisy channel   Quantum key distribution can be enhanced and extended if nonclassical
single-photon states of light are used. We study a connection between the
security of quantum key distribution and quantum non-Gaussianity of light
arriving at the receiver's detection system after the propagation through a
noisy quantum channel, being under full control of an eavesdropper performing
general collective attacks. We show that while quantum nonclassicality
exhibited by the light arriving at the receiver's station is a necessary
indication of the security of the discrete-variable protocols, quantum
non-Gaussianity can be a sufficient indication of their security. Therefore,
checking for non-Gaussianity of this light by performing standard
autocorrelation function measurement can be used for prior verification of the
usability of prepare-and-measure schemes. It can play similar role to the prior
verification of the quantum correlations sufficient to violate Bell
inequalities for entanglement-based protocols.

28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys