Kinetic inductance based electromagnetically induced transparency in superconducting millimeter-wave resonators

Until recently, the main application for superconducting millimeter-wave devices has been in radio-astronomy. Now, given their attractive properties and possible applications in quantum networks, there is a growing interest in using millimeter-wave superconducting resonators for quantum information science. We demonstrate a millimeter-wave superconducting device that utilizes the kinetic inductance nonlinearity to realize electromagnetically induced transparency. By driving a strong pump field at 18 GHz, two millimeter wave modes at different frequencies are coupled to each other. This nonlinear coupling strongly modifies the response and opens a pump-tunable transparency window at the modes' resonance frequency. In this talk, we will describe the device's design, discuss the measurement set-up, and recent experimental results.