Single microwave-photon detection with Josephson systems for the search of Axions and Axion-like particles

Josephson systems coupled to resonators allow the detection of single microwave-photons, an important but difficult task because of the low energies of involved photons. This make potentially accessible a series of important applications related to quantum computing, quantum metrology, ultrasensitive spectrum analysis of cryogenic environment, cosmic background radiation detection, search for exotic particles and so on. In particular, single microwave-photon detection can be a fundamental tool for the search of Dark Matter Axions and of Axion-like particles, provided that a series of specific difficulties and requirements can be overcome. We present the problem with possible solutions, strategies and perspectives.