Testing the limits of quantum mechanical superpositions

TL;DR

This paper explores whether quantum superpositions, typically observed at microscopic scales, can be extended to macroscopic objects, addressing fundamental questions about reality and locality in quantum physics.

Contribution

It reviews recent progress and proposes that tabletop experiments could test the limits of quantum superpositions at macroscopic scales.

Findings

Quantum superpositions may be achievable at larger scales.

Recent experimental advances support testing macroscopic quantum states.

The debate on quantum linearity at macroscopic levels remains open.

Abstract

Quantum physics has intrigued scientists and philosophers alike, because it challenges our notions of reality and locality--concepts that we have grown to rely on in our macroscopic world. It is an intriguing open question whether the linearity of quantum mechanics extends into the macroscopic domain. Scientific progress over the last decades inspires hope that this debate may be decided by table-top experiments.