Non-Gaussian states by conditional measurements

TL;DR

This paper explores methods to generate non-Gaussian states of light using conditional measurements on correlated bipartite states, highlighting the role of quantum correlations and practical experimental considerations.

Contribution

It compares quantum and classical correlations in generating non-Gaussian states and proposes a feasible experimental setup with current technology.

Findings

Quantum correlations yield higher non-Gaussianity at low energy.

Detection efficiency impacts the non-Gaussianity produced.

Quantum states outperform classical states in non-Gaussianity generation.

Abstract

We address realistic schemes for the generation of non-Gaussian states of light based on conditional intensity measurements performed on correlated bipartite states. We consider both quantum and classically correlated states and different kind of detection, comparing the resulting non Gaussianity parameters upon varying the input energy and the detection efficiency. We find that quantum correlations generally lead to higher non Gaussianity, at least in the low energy regime. An experimental implementation feasible with current technology is also suggested.