  Teaching quantum communication is a challenging task when involving different
technical and engineering backgrounds. The use of an approach that exploits the
knowledge of these profiles, as well as other technological resources available
for demonstrations or exercises, enhances this teaching. This paper presents as
an example the "Quantum Communications Lab" that took place at the 6th INFIERI
Summer School in 2021. In this lab, the access to the Madrid Quantum
Communication Infrastructure (MadQCI) was an important resource available.
