Toward the observation of entanglement from superradiant scattering

Superradiant scattering is an entanglement-generating phenomenon. In this talk, we will make apparent the inherently quantum nature of superradiance, emphasizing the use of general principles of Quantum Field Theory in Curved Spacetimes. We will also discuss how to quantify the entanglement produced by superradiance when the input state is mixed (i.e., thermal input from the environment). This formalism applies to systems including rotating black holes, as well as rotating quantum fluids in the laboratory. The latter offers a suitable scenario to test experimentally the underlying physical principles.