Multilayer test masses to enhance the collapse noise

Carlesso, Matteo, Vinante, Andrea and Bassi, Angelo (2018) Multilayer test masses to enhance the collapse noise. Physical Review A, 98, 1-10, [022122]. (doi:10.1103/PhysRevA.98.022122).

Record type: Article

Abstract

Recently, a non-thermal excess noise, compatible with the theoretical prediction provided by collapse models, was measured in a millikelvin nanomechanical cantilever experiment [Vinante et al., Phys. Rev. Lett. 119, 110401 (2017)]. We propose a feasible implementation of the cantilever experiment able to probe such a noise. The proposed modification, completely within the grasp of current technology and readily implementable also in other type of mechanical non-interferometric experiments, consists in substituting the homogeneous test mass with one composed of different layers of different materials. This will enhance the action of a possible collapse noise above that given by standard noise sources.

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Multilayer test masses to enhance the collapse noise - Accepted Manuscript

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