Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Practical high-dimensional quantum key distribution with decoy states   High-dimensional quantum key distribution (HD-QKD) allows two parties to
generate multiple secure bits of information per detected photon. In this work,
we show that decoy state protocols can be practically implemented for HD-QKD
using only one or two decoy states. HD-QKD with two decoy states, under
realistic experimental constraints, can generate multiple secure bits per
coincidence at distances over 200 km and at rates similar to those achieved by
a protocol with infinite decoy states. Furthermore, HD-QKD with only one decoy
state is practical at short distances, where it is almost as secure as a
protocol with two decoy states. HD-QKD with only one or two decoy states can
therefore be implemented to optimize the rate of secure quantum communications.

34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph