  Recent advances in quantum electronics have allowed to engineer hybrid
nano-devices comprising on chip a microwave electromagnetic resonator coupled
to an artificial atom, a quantum dot. These systems realize novel platforms to
explore non-equilibrium quantum impurity physics with light and matter.
Coupling the quantum dot system to reservoir leads (source and drain) produces
an electronic current as well as dissipation when applying a bias voltage
across the system. Focusing on a standard model of biased quantum dot coupled
to a photon mode we elucidate the signatures of the electronic correlations in
the phase of the transmitted microwave signal. In addition, we illustrate the
effect of the electronic degrees of freedom on the photon field, giving rise to
non-linearities, damping and dissipation, and discuss how to control these
effects by means of gate and bias voltages.
