Speaker
Description
Spontaneous wavefunction collapse models, such as the Continuous Spontaneous Localization (CSL) model, provide a promising approach to address the quantum measurement problem by introducing stochastic, nonlinear modifications to the Schrödinger equation. We present new experimental constraints on the CSL model derived from recent high-precision measurements of optomechanical systems rotational motion. Using data from both the LISA Pathfinder mission and a state-of-the-art table-top short-distance gravity experiment, we show that rotational noise can place competitive, and in some regimes stronger, bounds on CSL parameters compared to translational tests. Our analysis highlights the conditions under which rotational degrees of freedom offer enhanced sensitivity to collapse-induced noise. Additionally, we design an optimized geometry of the test mass to amplify the CSL effect and access previously unexplored regions of the parameter space. These findings underscore the potential of rotational tests as a powerful tool for future dedicated experimental investigations of collapse models.
