Rahman, ATMA;
(2019)
Large spatial Schr;dinger cat state using a levitated ferrimagnetic nanoparticle.
New Journal of Physics
, 21
(11)
, Article 113011. 10.1088/1367-2630/ab4fb3.
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Abstract
The superposition principle is one of the main tenets of quantum mechanics. Despite its counter-intuitiveness, it has been experimentally verified using electrons, photons, atoms, and molecules. However, a similar experimental demonstration using a nano or a micro particle is non-existent. Here in this article, exploiting macroscopic quantum coherence and quantum tunneling, we propose an experiment using a levitated magnetic nanoparticle to demonstrate such an effect. It is shown that the spatial separation between the delocalized wavepackets of a 20 nm ferrimagnetic yttrium iron garnet (YIG) nanoparticle can be as large as 5 μm. We argue that, in addition to using for testing one of the most fundamental aspects of quantum mechanics, this scheme can simultaneously be used to test different modifications, such as wavefunction collapse models, to the standard quantum mechanics. Furthermore, we show that the spatial superposition of a core–shell structure, a YIG core and a non-magnetic silica shell, can be used to probe quantum gravity.
| Type: | Article |
|---|---|
| Title: | Large spatial Schr;dinger cat state using a levitated ferrimagnetic nanoparticle |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1367-2630/ab4fb3 |
| Publisher version: | https://doi.org/10.1088/1367-2630/ab4fb3 |
| Language: | English |
| Additional information: | © IOP Publishing. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (http://creativecommons.org/licenses/by/3.0/). |
| Keywords: | macroscopic quantum tunneling, macroscopic quantum coherence, macroscopic spatial superposition, quantum gravity, levitation using ion trap, ferrimagnetic nanoparticles, Schrödinger cat |
| 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 |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10088804 |
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