Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Security bounds in Quantum Cryptography using d-level systems   We analyze the security of quantum cryptography schemes for $d$-level systems
using 2 or $d+1$ maximally conjugated bases, under individual eavesdropping
attacks based on cloning machines and measurement after the basis
reconciliation. We consider classical advantage distillation protocols, that
allow to extract a key even in situations where the mutual information between
the honest parties is smaller than the eavesdropper's information. In this
scenario, advantage distillation protocols are shown to be as powerful as
quantum distillation: key distillation is possible using classical techniques
if and only if the corresponding state in the entanglement based protocol is
distillable.

37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs