Lasing in Circuit Quantum Electrodynamics

This chapter is devoted to special realizations of lasing on single artificial atoms. It is demonstrated that special properties of quantum systems, implemented as an electrical circuit, may be explored to repeat original quantum optic experiments and extend them to new regimes. As we will discuss, this can, for example, lead to the realizations of lasing that only requires two states of the artificial atom. There we make use of the relaxation and of special coupling properties that naturally are achieved in the field of the circuit quantum electrodynamics.