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Macroscopic superpositions and gravimetry with quantum magnetomechanics
Precision measurements of gravity can provide tests of fundamental physics and are of broad practical interest for metrology. We propose a scheme for absolute gravimetry using a quantum magnetomechanical system consisting of a magnetically trapped superconducting resonator whose motion is controlled...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5116620/ https://www.ncbi.nlm.nih.gov/pubmed/27869142 http://dx.doi.org/10.1038/srep37495 |
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author | Johnsson, Mattias T. Brennen, Gavin K. Twamley, Jason |
author_facet | Johnsson, Mattias T. Brennen, Gavin K. Twamley, Jason |
author_sort | Johnsson, Mattias T. |
collection | PubMed |
description | Precision measurements of gravity can provide tests of fundamental physics and are of broad practical interest for metrology. We propose a scheme for absolute gravimetry using a quantum magnetomechanical system consisting of a magnetically trapped superconducting resonator whose motion is controlled and measured by a nearby RF-SQUID or flux qubit. By driving the mechanical massive resonator to be in a macroscopic superposition of two different heights our we predict that our interferometry protocol could, subject to systematic errors, achieve a gravimetric sensitivity of Δg/g ~ 2.2 × 10(−10) Hz(−1/2), with a spatial resolution of a few nanometres. This sensitivity and spatial resolution exceeds the precision of current state of the art atom-interferometric and corner-cube gravimeters by more than an order of magnitude, and unlike classical superconducting interferometers produces an absolute rather than relative measurement of gravity. In addition, our scheme takes measurements at ~10 kHz, a region where the ambient vibrational noise spectrum is heavily suppressed compared the ~10 Hz region relevant for current cold atom gravimeters. |
format | Online Article Text |
id | pubmed-5116620 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-51166202016-11-28 Macroscopic superpositions and gravimetry with quantum magnetomechanics Johnsson, Mattias T. Brennen, Gavin K. Twamley, Jason Sci Rep Article Precision measurements of gravity can provide tests of fundamental physics and are of broad practical interest for metrology. We propose a scheme for absolute gravimetry using a quantum magnetomechanical system consisting of a magnetically trapped superconducting resonator whose motion is controlled and measured by a nearby RF-SQUID or flux qubit. By driving the mechanical massive resonator to be in a macroscopic superposition of two different heights our we predict that our interferometry protocol could, subject to systematic errors, achieve a gravimetric sensitivity of Δg/g ~ 2.2 × 10(−10) Hz(−1/2), with a spatial resolution of a few nanometres. This sensitivity and spatial resolution exceeds the precision of current state of the art atom-interferometric and corner-cube gravimeters by more than an order of magnitude, and unlike classical superconducting interferometers produces an absolute rather than relative measurement of gravity. In addition, our scheme takes measurements at ~10 kHz, a region where the ambient vibrational noise spectrum is heavily suppressed compared the ~10 Hz region relevant for current cold atom gravimeters. Nature Publishing Group 2016-11-21 /pmc/articles/PMC5116620/ /pubmed/27869142 http://dx.doi.org/10.1038/srep37495 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Johnsson, Mattias T. Brennen, Gavin K. Twamley, Jason Macroscopic superpositions and gravimetry with quantum magnetomechanics |
title | Macroscopic superpositions and gravimetry with quantum magnetomechanics |
title_full | Macroscopic superpositions and gravimetry with quantum magnetomechanics |
title_fullStr | Macroscopic superpositions and gravimetry with quantum magnetomechanics |
title_full_unstemmed | Macroscopic superpositions and gravimetry with quantum magnetomechanics |
title_short | Macroscopic superpositions and gravimetry with quantum magnetomechanics |
title_sort | macroscopic superpositions and gravimetry with quantum magnetomechanics |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5116620/ https://www.ncbi.nlm.nih.gov/pubmed/27869142 http://dx.doi.org/10.1038/srep37495 |
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