Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Satellite Quantum Communication via the Alphasat Laser Communication
  Terminal   By harnessing quantum effects, we nowadays can use encryption that is in
principle proven to withstand any conceivable attack. These fascinating quantum
features have been implemented in metropolitan quantum networks around the
world. In order to interconnect such networks over long distances, optical
satellite communication is the method of choice. Standard telecommunication
components allow one to efficiently implement quantum communication by
measuring field quadratures (continuous variables). This opens the possibility
to adapt our Laser Communication Terminals (LCTs) to quantum key distribution
(QKD). First satellite measurement campaigns are currently validating our
approach.

18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th