An optomechanical platform for quantum hypothesis testing for collapse models. (8th April 2021)

• Record Type: Journal Article
• Authors: Marchese, Marta Maria; Belenchia, Alessio; Pirandola, Stefano; Paternostro, Mauro
• Is Part Of: New journal of physics. Volume 23:Number 4(2021)
• Publication Date: 2021-04-08
• Subjects: quantum hypothesis testing -- quantum optomechanics -- collapse models; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/abec0d
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: Quantum hypothesis testing has shown the advantages that quantum resources can offer in the discrimination of competing hypothesis. Here, we apply this framework to optomechanical systems and fundamental physics questions. In particular, we focus on an optomechanical system composed of two cavities employed to perform quantum channel discrimination. We show that input squeezed optical noise, and feasible measurement schemes on the output cavity modes, allow to obtain an advantage with respect to any comparable classical schemes. We apply these results to the discrimination of models of spontaneous collapse of the wavefunction, highlighting the possibilities offered by this scheme for fundamental physics searches.