Federica Mantegazzini - Fondazione Bruno Kessler, Trento

Dynamic control of microwave photons using nonlinear superconducting circuits

Superconducting circuits offer unprecedented opportunities to manipulate microwaves and explore novel phenomena in the field of microwave photonics. In this talk, two recent experiments based on the dynamic control of nonlinear superconducting microwave circuits based on cavities and waveguides will be presented. The first experiment demonstrates synthetic-lattice Bloch-wave dynamics in a superconducting microwave resonator, where temporal modulation creates an effective frequency lattice supporting tunable transport. The second experiment investigates Doppler-induced frequency conversion generated by the dynamics of a moving front propagating along a superconducting waveguide. Although based on distinct physical principles, both these works harness spatio-temporal control of microwave signals in a superconducting platform to tailor the interaction of microwave photons with engineered electromagnetic environments. These approaches establish new tools for microwaves manipulation in superconducting circuits and point towards novel applications in the fields of microwave photonics, synthetic dimensions, and quantum information processing.