Multilayer test masses to enhance the collapse noise

Matteo Carlesso, Andrea Vinante, and Angelo Bassi
Phys. Rev. A 98, 022122 – Published 17 August 2018

Abstract

Recently, nonthermal excess noise, compatible with the theoretical prediction provided by collapse models, was measured in a millikelvin nanomechanical cantilever experiment [A. Vinante et al., Phys. Rev. Lett. 119, 110401 (2017)]. We propose a feasible implementation of the cantilever experiment able to probe such noise. The proposed modification, completely within the grasp of current technology and readily implementable also in other types of mechanical noninterferometric experiments, consists in replacing 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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  • Received 29 May 2018

DOI:https://doi.org/10.1103/PhysRevA.98.022122

©2018 American Physical Society

Physics Subject Headings (PhySH)

General PhysicsCondensed Matter, Materials & Applied PhysicsNonlinear DynamicsQuantum Information, Science & Technology

Authors & Affiliations

Matteo Carlesso1,2,*, Andrea Vinante3,4, and Angelo Bassi1,2

  • 1Department of Physics, University of Trieste, Strada Costiera 11, 34151 Trieste, Italy
  • 2Istituto Nazionale di Fisica Nucleare, Trieste Section, Via Valerio 2, 34127 Trieste, Italy
  • 3Department of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ, United Kingdom
  • 4Istituto di Fotonica e Nanotecnologie, CNR, Fondazione Bruno Kessler, 38123 Povo, Trento, Italy

  • *matteo.carlesso@ts.infn.it

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Issue

Vol. 98, Iss. 2 — August 2018

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