Galbiati co-leads the DarkSide/Global Argon Dark Matter Collaboration program (DarkSide-20k and successors), developing ultra-radiopure underground argon and cryogenic noble-liquid time-projection chambers for direct WIMP dark-matter detection, building on his earlier work on the Borexino solar-neutrino scintillator experiment. Included as a borderline quantum-sensing entry on the strength of the ultra-low-background, single-quantum (photon/ionization) detection technology his group has developed, which is now being adapted for other applications such as total-body PET imaging.