# Experimental nonclassicality of single-photon-added thermal light states

## TL;DR

This paper experimentally creates and analyzes single-photon-added thermal states, demonstrating their tunable quantum properties and testing non-classicality criteria through quantum state tomography and entanglement evaluation.

## Contribution

It introduces a method to generate and characterize novel quantum states with tunable non-classicality from classical thermal light.

## Key findings

- States exhibit tunable quantum features despite incoherence
- Successfully tested non-classicality criteria experimentally
- States can generate entanglement in quantum information applications

## Abstract

We report the experimental realization and tomographic analysis of novel quantum light states obtained by exciting a classical thermal field by a single photon. Such states, although completely incoherent, possess a tunable degree of quantumness which is here exploited to put to a stringent experimental test some of the criteria proposed for the proof and the measurement of state non-classicality. The quantum character of the states is also given in quantum information terms by evaluating the amount of entanglement that they can produce.