Quantum Switch on a Superposition of Spherical Shells | Colóquio DFMA

Abstract: Phenomenological models have recently been explored for the analysis of possible effects in quantum systems due to a superposition of geometries, including the occurrence of processes with indefinite order. In particular, in a gravitational quantum switch, the order of operations applied by two agents on a target system is entangled with the state of the geometry. We consider a model describing the superposition of geometries produced by distinct arrangements of spherical mass shells, and show that a protocol for the implementation of a gravitational quantum switch can be formulated in such a system.