Comment on "Optimal probe wave function of weak-value amplification"

TL;DR

This paper critiques a previous work on weak-value amplification, clarifying misconceptions about the spectrum of confined particles and providing counter-examples to challenge prior conclusions.

Contribution

It identifies and corrects misconceptions in weak-value amplification theory, offering explicit counter-examples and clarifying the source of previous errors.

Findings

Misconception about the spectrum of confined particles corrected

Counter-example demonstrating arbitrary amplification

Identification of the source of previous errors

Abstract

First, a misconception about the spectrum of a confined particle is evidentiated. Then, the results are shown to be incorrect by means of a counter-example, an explicit preparation for the probe is given that yields an arbitrary amplification, and the source of the error is pointed out.