All-optical quantum simulator of qubit noisy channels

TL;DR

This paper presents an all-optical quantum simulator that uses a photon's polarization and spectral components to emulate single-qubit noisy channels caused by fluctuating fields, demonstrating simulations of Gaussian and non-Gaussian dephasing processes.

Contribution

It introduces a novel all-optical approach to simulate qubit noisy channels, leveraging spectral components for averaging over stochastic dynamics.

Findings

Successfully simulated Gaussian dephasing channels

Demonstrated non-Gaussian (telegraph) noise simulation

Validated the approach with experimental results

Abstract

We suggest and demonstrate an all-optical quantum simulator for single-qubit noisy channels originating from the interaction with a fluctuating field. The simulator employs the polarization degree of freedom of a single photon, and exploits its spectral components to average over the realizations of the stochastic dynamics. As a proof of principle, we run simulations of dephasing channels driven either by Gaussian (Ornstein-Uhlenbeck) or non-Gaussian (random telegraph) stochastic processes.