Benchmarking of Gaussian boson sampling using two-point correlators

Understand

Gaussian boson sampling is a promising scheme for demonstrating a quantum computational advantage using photonic states that are accessible in a laboratory and, thus, offer scalable sources of quantum light.

• In this contribution, we study two-point photon-number correlation functions to gain insight into the interference of Gaussian states in optical networks.
• We investigate the characteristic features of statistical signatures which enable us to distinguish classical from quantum interference.
• In contrast to the typical implementation of boson sampling, we find additional contributions to the correlators under study which stem from the phase dependence of Gaussian states and which are not observable when Fock states interfere.