Analogue simulation of quantum gravity black hole models in a dc-SQUID array

We propose an analog quantum simulation for studying the collapse and bounce of a star from infinity. In this spacetime, which encompasses both a black hole and a white hole, we place a massless scalar field that propagates at the speed of light, which is modified by the curvature. We simulate this system using an SQUID array, in which we can alter the propagation of light using an external magnetic field. We consider both infalling and outfalling radiation, giving rise to two different scenarios: downstream and upstream radiation. We compute the magnetic flux profile required by the simulation in both cases and find out that the former is more experimentally feasible.