Testing Wavefunction Collapse Models using Parametric Heating of a Trapped Nanosphere

Daniel Goldwater, Mauro Paternostro, P. F. Barker

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)
251 Downloads (Pure)


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 utilising a Paul trap to levitate the particle and optical cooling, it is possible to reduce environmental decoher- ence 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 timescale of seconds, and that the free parameter λcsl which characterises the model ought to be testable to values as low as 10^{−12} Hz.
Original languageEnglish
Number of pages5
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Issue number1
Publication statusPublished - 14 Jul 2016


Dive into the research topics of 'Testing Wavefunction Collapse Models using Parametric Heating of a Trapped Nanosphere'. Together they form a unique fingerprint.

Cite this