Ultradecoherence model of the measurement process

TL;DR

This paper introduces the ultradecoherence model, proposing that measurement devices rapidly decohere, ensuring definite states, and derives their clicking rates from fundamental parameters, advancing understanding of quantum measurement physics.

Contribution

It presents a novel ultradecoherence model for measurement devices, linking decoherence dynamics to measurement outcomes and deriving clicking rates from device parameters.

Findings

Measurement devices exhibit ultradecoherence, ensuring definite states.

Clicking rates can be derived from device parameters.

The model applies to both ideal and photon detectors.

Abstract

It is proposed that measurement devices can be modelled to have an open decoherence dynamics that is faster than any other relevant timescale, which is referred to as the ultradecoherence limit. In this limit, the measurement device always assumes a definite state upto the accuracy set by the fast decoherence timescale. Further, it is shown that the clicking rate of measurement devices can be derived from its underlying parameters, not only for the von Neumann ideal measurement devices but also for photon detectors in equal footing. This study offers a glimpse into the intriguing physics of measurement processes in quantum mechanics, with many aspects open for further investigation.