Coarsening Measurement References and the Quantum-to-Classical Transition

TL;DR

This paper explores how increasing measurement reference coarsening influences the quantum-to-classical transition, proposing that measurement precision should account for the observer's control over measurement references.

Contribution

It introduces a novel perspective on measurement references, demonstrating their critical role in the quantum-to-classical transition and redefining measurement precision in quantum theory.

Findings

Quantum-to-classical transition observed with coarsened measurement references

Measurement precision should include observer's control over measurement references

Inefficiency in measurements impacts the quantum-to-classical boundary

Abstract

We investigate the role of inefficiency in quantum measurements in the quantum-to-classical transition, and consistently observe the quantum-to-classical transition by coarsening the references of the measurements (e.g. when and where to measure). Our result suggests that the definition of measurement precision in quantum theory should include the degree of the observer's ability to precisely control the measurement references.