Dartmouth: Laser made from superconducting artificial atom could aid information transfer in quantum computing

To create the laser, a team from Dartmouth College embedded a pair of electrons called a Cooper pair in a high-quality microwave cavity. As stated in the research, when the tunneling Cooper pair energy is equal to a multiple of the cavity photon frequency, the cavity is pumped to a strong non-equilibrium state.
CLICK TO VIEW THE SOURCE MATERIAL