# Opto-mechanical tests of collapse models

## TL;DR

This paper reviews opto-mechanical methods for testing collapse models, emphasizing how system complexity affects the divergence from quantum mechanics and exploring non-interferometric approaches to validate collapse theories.

## Contribution

It introduces a comprehensive review of non-interferometric opto-mechanical tests for collapse models, highlighting their potential to probe the models' parameter space.

## Key findings

- Non-interferometric opto-mechanical tests can effectively distinguish collapse models from quantum mechanics.
- The divergence between collapse models and quantum predictions increases with system mass and size.
- Opto-mechanical platforms offer scalable and sensitive means to test collapse theories.

## Abstract

The gap between the predictions of collapse models and those of standard quantum mechanics widens with the complexity of the involved systems. Addressing the way such gap scales with the mass or size of the system being investigated paves the way to testing the validity of the collapse theory and identify the values of the parameters that characterize it. Here, we review the recently proposed non-interferometric approach to the testing of collapse models, focusing on the opto-mechanical platform.