Radiation squeezing in interacting quantum Hall edge channels

A mesoscopic system emits microwaves when subject to a periodic drive in the GHz range. The quantum features of this emitted radiation, such as squeezing, can be accessed by measuring the finite frequency photo-assisted noise in a quantum point contact geometry. In this context, we theoretically investigate the robustness of these quantum properties against electron-electron interaction using quantum Hall edge channels at ? = 2 as the testbed.