Experimental method for measuring classical concurrence of generic beam shapes

TL;DR

This paper introduces a new experimental method to measure classical entanglement in arbitrary beam shapes, enabling broader analysis of classical correlations in complex optical modes.

Contribution

It presents a generalized approach for quantifying classical entanglement in arbitrarily shaped transverse modes, expanding beyond previous limited cases.

Findings

Effective measurement of classical entanglement in generic beam shapes

Extension of classical entanglement quantification to complex modal structures

Provides a practical tool for analyzing classical correlations in optical systems

Abstract

Classical entanglement is a powerful tool which provides a neat numerical estimate for the study of classical correlations. Its experimental investigation, however, has been limited to special cases. Here, we demonstrate that the experimental quantification of the level of classical entanglement can be carried out in more general instances. Our approach enables the extension to arbitrarily shaped transverse modes and hence delivering a suitable quantification tool to describe concisely the modal structure.