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arXiv · 2302.08995

Optomechanics-based quantum estimation theory for collapse models

Marta Maria Marchese·Alessio Belenchia·Mauro Paternostro
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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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Marta Maria Marchese, Alessio Belenchia, Mauro Paternostro. 2023-02-17. Optomechanics-based quantum estimation theory for collapse models. https://doi.org/10.3390/e25030500

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