Optomechanics-based quantum estimation theory for collapse models

Marta Maria Marchese; Alessio Belenchia; Mauro Paternostro

doi:10.3390/e25030500

Optomechanics-based quantum estimation theory for collapse models

Marta Maria Marchese, Alessio Belenchia, Mauro Paternostro

School of Mathematics and Physics

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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 localization (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.

Original language	English
Article number	500
Journal	Entropy
Volume	25
Issue number	3
DOIs	https://doi.org/10.3390/e25030500
Publication status	Published - 14 Mar 2023

Keywords

General Physics and Astronomy

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10.3390/e25030500Licence: CC BY

Optomechanics-based quantum estimation theory for collapse models
Copyright 2023 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 1.53 MBLicence: CC BY

Cite this

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Optomechanics-based quantum estimation theory for collapse models

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