Non-Gaussianity of multiple photon subtracted thermal states in terms of compound-Poisson photon number distribution parameters: theory and experiment

TL;DR

This paper investigates the non-Gaussian properties of multiple photon subtracted thermal states using compound-Poisson distribution parameters, providing both theoretical analysis and experimental validation of how non-Gaussianity evolves with optical damping.

Contribution

It introduces a parameter-based description of non-Gaussianity in photon subtracted thermal states and experimentally studies its loss during damping.

Findings

Non-Gaussianity depends on two key parameters of the distribution.

Analytical and numerical calculations of non-Gaussianity were performed.

Experimental results confirmed the theoretical predictions on non-Gaussianity loss.

Abstract

The multiphoton-subtracted thermal states are an interesting example of quantum states of light which are both classical and non-Gaussian. All the properties of such states can be described by just two parameters of compound-Poisson photon number distribution. The non-Gaussianity dependency on these parameters has been calculated numerically and analytically. The loss of non-Gaussianity during the optical damping has been also studied experimentally.