Gouy phase in non-classical paths in triple-slit interference experiment

TL;DR

This paper models the Gouy phase effect in a triple-slit experiment considering non-classical paths, revealing how the phase difference influences the detection of non-classical contributions.

Contribution

It introduces a simple model to analyze the Gouy phase in non-classical paths, highlighting its impact on experimental detection of non-classical effects.

Findings

Gouy phase differs between classical and non-classical paths

Gouy phase difference affects the Sorkin parameter $$

Implications for experimental detection of non-classical paths

Abstract

We propose a simple model to study the Gouy phase effect in the triple-slit experiment in which we consider a non-classical path. The Gouy phase differs for classical or non-classical paths as it depends on the propagation time. In this case the Gouy phase difference changes the Sorkin parameter $\kappa$ used to estimate non-classical path contribution in a nontrivial way shedding some light in the implementation of experiments to detect non-classical path contributions.