Comment on "Proof of Heisenberg's error-disturbance principle"

TL;DR

This paper critiques recent claims that Heisenberg's error-disturbance relation universally holds when the meter observable is modified, arguing that these claims lack sufficient support.

Contribution

The authors challenge recent assertions that Heisenberg's EDR can be universally proven under certain modifications, providing critical comments on these claims.

Findings

Heisenberg's EDR may not hold universally under all modifications.

Claims of a general proof are not sufficiently supported.

The paper clarifies misunderstandings about the interpretation of EDR.

Abstract

Recently, Kosugi [arXiv:1504.03779v2 [quant-ph]] argued that Heisenberg's error-disturbance relation (EDR) must be interpreted as being between the resolution, the preparational error for the post-measurement observable, and the disturbance. He further claimed that Heisenberg's EDR can be proven to hold true in general, when the meter observable is modified as one of its functions. Here, some comments are given to suggest that the above claims are not supported.