Optomechanics-based quantum estimation theory for collapse models

• URL: http://arxiv.org/abs/2302.08995v1
• Date: Fri, 17 Feb 2023 16:54:50 GMT
• Title: Optomechanics-based quantum estimation theory for collapse models
• Authors: Marta Maria Marchese, Alessio Belenchia, Mauro Paternostro
• Abstract summary: We show that a study performed in non-equilibrium conditions unveils the advantages provided by the use of genuinely quantum resources. Our investigation contributes to the ongoing effort aimed at identifying suitable conditions for the experimental assessment of collapse models.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We make use of the powerful formalism of quantum parameter estimation to assess the characteristic rates of a Continuous Spontaneous Localisation (CSL) model affecting the motion of a massive mechanical system. We show that a study performed in non-equilibrium conditions unveils the advantages provided by the use of genuinely quantum resources -- such as quantum correlations -- in estimating the CSL-induced diffusion rate. In stationary conditions, instead, the gap between quantum performance and a classical scheme disappears. Our investigation contributes to the ongoing effort aimed at identifying suitable conditions for the experimental assessment of collapse models.

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