One key physics goal is to use dedicated systems of SiPMs to look for the elusive dark matter in the Universe. In order to achieve extreme sensitivity of detectors, its components themselves must not generate any background that could potentially obscure the signal from dark matter. Another important physics goal is the search for so-called Majorana neutrinos. A similar detection technology enables us to look for this potential feature of neutrinos, which could shed lights on the reasons for why our Universe is mostly made up of matter and not antimatter.