Comment on "Fringe Visibility and Which-Way Information: An Inequality"

TL;DR

This paper identifies and corrects a minor technical flaw in the original derivation of the wave-particle duality relation, reaffirming its validity without challenging its physical significance.

Contribution

It provides a correction to a historical derivation of the duality relation, ensuring its mathematical accuracy while maintaining its physical interpretation.

Findings

The flaw in the original proof is corrected.

The duality relation remains valid after correction.

The physical implications of the duality relation are unaffected.

Abstract

We comment on one of the earliest derivations of the so-called wave-particle duality relation. Our aim is to point out a slight technical flaw in the proof, fixing it. Neither the physical content of the duality relation nor its validity is thereby questioned.