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Testing wave-function-collapse models using parametric heating of a trapped nanosphere

Goldwater, D; Paternostro, M; Barker, PF; (2016) Testing wave-function-collapse models using parametric heating of a trapped nanosphere. Physical Review A , 94 (1) , Article 010104(R). 10.1103/PhysRevA.94.010104. Green open access

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Abstract

We propose a mechanism for testing the theory of collapse models such as continuous spontaneous localization (CSL) by examining the parametric heating rate of a trapped nanosphere. The random localizations of the center of mass for a given particle predicted by the CSL model can be understood as a stochastic force embodying a source of heating for the nanosphere. We show that by utilizing a Paul trap to levitate the particle and optical cooling, it is possible to reduce environmental decoherence to such a level that CSL dominates the dynamics and contributes the main source of heating. We show that this approach allows measurements to be made on the time scale of seconds and that the free parameter λ csl which characterizes the model ought to be testable to values as low as 10 − 12 Hz.

Type: Article
Title: Testing wave-function-collapse models using parametric heating of a trapped nanosphere
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevA.94.010104
Publisher version: http://dx.doi.org/10.1103/PhysRevA.94.010104
Additional information: ©2017 American Physical Society.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery-pp.ucl.ac.uk/id/eprint/1524818
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