In the Quantum Engineering Lab, we focus on waveguide quantum electrodynamics using superconducting circuits and spin ensembles. We study quantum optical effects with superconducting artificial atoms and spin ensembles in one dimensional waveguide. These effects includes single atom scattering, amplification with and without population inversion, cooperate effects with multiple artificial atoms and dynamics of atom under driving. If you are interested in our field, please contact Prof. Hoi.