Experimental bounds on linear-friction dissipative collapse models from levitated optomechanics

Collapse models constitute an alternative to quantum mechanics that solve the well-know quantum measurement problem. In this framework, a novel approach to include dissipation in collapse models has been recently proposed, and awaits experimental validation. Our work establishes experimental bounds on the so-constructed linear-friction dissipative Diósi-Penrose (dDP) and Continuous Spontaneous localisation (dCSL) models by exploiting experiments in the field of levitated optomechanics. Our results in the dDP case exclude collapse temperatures below ${10}^{-13}$K and $6\times {10}^{-12}$K respectively for values of the localisation length smaller than ${10}^{-6}$m and ${10}^{-8}$m. In the dCSL case the entire parameter space is excluded for values of the temperature lower than $6\times {10}^{-9}$K.