All-optical implementation of collision-based evolutions of open quantum systems
Álvaro Cuevas, Andrea Geraldi, Carlo Liorni, L. D. Bonavena, Antonella De Pasquale, Fabio Sciarrino, Vittorio Giovannetti, Paolo Mataloni · Scientific Reports · 2019
We present a new optical scheme enabling the implementation of highly stable and configurable non-Markovian dynamics. Here one photon qubit can circulate in a multipass bulk geometry consisting of two concatenated Sagnac interferometers to simulate the so called collisional model, where the system interacts at discrete times with a vacuum environment. We show the optical features of our apparatus and three different implementations of it, replicating a pure Markovian scenario and two non-Markovian ones, where we quantify the information backflow by tracking the evolution of the initial entanglement between the system photon and an ancillary one.