  During the past decades, theorists have been studying quantum mechanical
systems that are believed to describe black holes. We review one of the
simplest examples. It involves a collection of interacting oscillators and
Majorana fermions. It is conjectured to describe a black hole in an emergent
universe governed by Einstein equations. Based on previous numerical
computations, we make an estimate of the necessary number of qubits necessary
to see some black hole features.
