Journal article 1482 views
Near-field interferometry of a free-falling nanoparticle from a point-like source
James Bateman 
,
Stefan Nimmrichter,
Klaus Hornberger,
Hendrik Ulbricht
,
Stefan Nimmrichter,
Klaus Hornberger,
Hendrik Ulbricht
Nature Communications, Volume: 5, Start page: 4788
Swansea University Author:
James Bateman
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DOI (Published version): 10.1038/ncomms5788
Abstract
Matter-wave interferometry performed with massive objects elucidates their wave nature and thus tests the quantum superposition principle at large scales. Whereas standard quantum theory places no limit on particle size, alternative, yet untested theories---conceived to explain the apparent quantum...
| Published in: | Nature Communications |
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| Published: |
2014
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa28698 |
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| Abstract: |
Matter-wave interferometry performed with massive objects elucidates their wave nature and thus tests the quantum superposition principle at large scales. Whereas standard quantum theory places no limit on particle size, alternative, yet untested theories---conceived to explain the apparent quantum to classical transition---forbid macroscopic superpositions. Here we propose an interferometer with a levitated, optically cooled, and then free-falling silicon nanoparticle in the mass range of one million atomic mass units, delocalized over more than 150 nm. The scheme employs the near-field Talbot effect with a single standing-wave laser pulse as a phase grating. Our analysis, which accounts for all relevant sources of decoherence, indicates that this is a viable route towards macroscopic high-mass superpositions using available technology. |
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| College: |
Faculty of Science and Engineering |
| Start Page: |
4788 |