Photon Number Statistics of Multimode Parametric Down-Conversion

TL;DR

This paper experimentally investigates the photon number distribution in multimode parametric down-conversion, highlighting deviations from single-mode theory and confirming photon number correlations with loss-tolerant reconstruction methods.

Contribution

It provides the first comprehensive experimental analysis of multimode photon number statistics and validates loss-tolerant reconstruction techniques for these complex states.

Findings

Differences between single-mode theory and experimental distributions.

Confirmation of strict photon number correlations.

Validation of loss-tolerant photon number reconstruction.

Abstract

We experimentally analyze the complete photon number statistics of parametric downconversion and ascertain the influence of multimode effects. Our results clearly reveal a difference between single mode theoretical description and the measured distributions. Further investigations assure the applicability of loss-tolerant photon number reconstruction and prove strict photon number correlation between signal and idler modes.