Entanglement generation with Josephson metamaterials.

Josephson metamaterials are crucial tools in superconducting quantum technologies since they are typically adopted as Traveling Wave Parametric Amplifiers (TWPAs) allowing broadband and near quantum-noise--limited microwave detection. Remarkably, the potential of these devices goes also beyond amplification: they are extremely promising for the generation of broadband squeezing and multi-mode entanglement. In this talk, I will present experimental results on the generation of two-mode microwave entanglement with a Josephson metamaterial and discuss the perspectives of this work in the framework of microwave photonics with superconducting quantum devices.