Reforming the international system of units: On our way to redefine the base units solely from fundamental constants and beyond

TL;DR

This paper analyzes the current SI system and proposes a pathway to redefine base units solely from fundamental constants, utilizing phase measurements and a five-dimensional geometric framework for unified metrology.

Contribution

It introduces a novel perspective on unit redefinition based on phase measurements and explores a five-dimensional geometric approach for fundamental metrology.

Findings

Measurement can be reduced to dimensionless phase measurements

A pathway to redefine SI units from fundamental constants is proposed

A five-dimensional geometric framework for metrology is explored

Abstract

Our purpose is to offer a logical analysis of the system of units and to explore possible paths towards a consistent and unified system with an original perspective. The path taken here builds on the fact that, thanks to optical or matter-wave interferometry, any measurement can be reduced to a dimensionless phase measurement and we follow this simple guiding line. We finally show how one could progress even further on the path of a synthetic framework for fundamental metrology based upon pure geometry in five dimensions.