Vinante, A;
Pontin, A;
Rashid, M;
Toros, M;
Barker, PF;
Ulbricht, H;
(2019)
Testing collapse models with levitated nanoparticles: Detection challenge.
Physical Review A
, 100
(1)
, Article 012119. 10.1103/PhysRevA.100.012119.
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Abstract
We consider a nanoparticle levitated in a Paul trap in ultrahigh cryogenic vacuum, and look for the conditions which allow for a stringent noninterferometric test of spontaneous collapse models. In particular we compare different possible techniques to detect the particle motion. Key conditions which need to be achieved are extremely low residual pressure and the ability to detect the particle at ultralow power. We compare three different detection approaches based, respectively, on an optical cavity, an optical tweezer, and an electrical readout, and for each one we assess advantages, drawbacks, and technical challenges.
| Type: | Article |
|---|---|
| Title: | Testing collapse models with levitated nanoparticles: Detection challenge |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.100.012119 |
| Publisher version: | https://doi.org/10.1103/PhysRevA.100.012119 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| 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.ucl.ac.uk/id/eprint/10079138 |
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