Intensity correlations, entanglement properties and ghost imaging in multimode thermal-seeded parametric downconversion: Theory

TL;DR

This paper presents a theoretical study of multimode thermal-seeded parametric downconversion, revealing its potential to generate tunable entangled states and enabling new regimes of ghost imaging and diffraction.

Contribution

It introduces a novel theoretical framework for multimode thermal-seeded parametric downconversion, highlighting its ability to produce controllable entanglement and correlated states.

Findings

Generation of multimode pairwise correlated states with tunable entanglement

Potential to explore classical-quantum transition in correlations

Enabling ghost imaging and diffraction in new regimes

Abstract

We address parametric-downconversion seeded by multimode pseudo-thermal fields. We show that this process may be used to generate multimode pairwise correlated states with entanglement properties that can be tuned by controlling the seed intensities. Multimode pseudo-thermal fields seeded parametric-downconversion represents a novel source of correlated states, which allows one to explore the classical-quantum transition in pairwise correlations and to realize ghost imaging and ghost diffraction in regimes not yet explored by experiments.