Experiments With Tunable Superconducting Metamaterials

The paper reviews experiments with networks of compact thin-film superconducting microwave resonators. Superconducting circuits offer low loss properties, well-controlled nonlinearity, and frequency tunability in the microwave and mm-wave frequency ranges. An interesting spin-off of superconducting metamaterials is going to be quantum metamaterials comprised of arrays of superconducting qubits. This direction is an emerging new field for fundamental studies in quantum optics using microwaves.