Improving the accuracy of atom interferometers with ultracold sources
We report on the implementation of ultracold atoms as a source in a state of the art atom gravimeter. We perform gravity measurements with 10 nm s ^−2 statistical uncertainties in a so-far largely unexplored temperature range for such a high accuracy sensor, down to 50 nK. This allows for an improve...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aaf07d |
| _version_ | 1797750583251173376 |
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| author | R Karcher A Imanaliev S Merlet F Pereira Dos Santos |
| author_facet | R Karcher A Imanaliev S Merlet F Pereira Dos Santos |
| author_sort | R Karcher |
| collection | DOAJ |
| description | We report on the implementation of ultracold atoms as a source in a state of the art atom gravimeter. We perform gravity measurements with 10 nm s ^−2 statistical uncertainties in a so-far largely unexplored temperature range for such a high accuracy sensor, down to 50 nK. This allows for an improved characterization of the most limiting systematic effect, related to wavefront aberrations of light beamsplitters. A thorough model of the impact of this effect onto the measurement is developed and a method is proposed to correct for this bias based on the extrapolation of the measurements down to zero temperature. Finally, an uncertainty of 13 nm s ^−2 is obtained in the evaluation of this systematic effect, which can be improved further by performing measurements at even lower temperatures. Our results clearly demonstrate the benefit brought by ultracold atoms to the metrological study of free falling atom interferometers. By tackling their main limitation, the method presented here allows reaching record-breaking accuracies for inertial sensors based on atom interferometry. |
| first_indexed | 2024-03-12T16:34:52Z |
| format | Article |
| id | doaj.art-cf9b4c2e713843f3a3c55b2a9e15bb04 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:34:52Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-cf9b4c2e713843f3a3c55b2a9e15bb042023-08-08T14:56:52ZengIOP PublishingNew Journal of Physics1367-26302018-01-01201111304110.1088/1367-2630/aaf07dImproving the accuracy of atom interferometers with ultracold sourcesR Karcher0A Imanaliev1S Merlet2F Pereira Dos Santos3LNE-SYRTE, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université , 61 avenue de l’Observatoire F-75014 Paris, FranceLNE-SYRTE, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université , 61 avenue de l’Observatoire F-75014 Paris, FranceLNE-SYRTE, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université , 61 avenue de l’Observatoire F-75014 Paris, FranceLNE-SYRTE, Observatoire de Paris, Université PSL, CNRS, Sorbonne Université , 61 avenue de l’Observatoire F-75014 Paris, FranceWe report on the implementation of ultracold atoms as a source in a state of the art atom gravimeter. We perform gravity measurements with 10 nm s ^−2 statistical uncertainties in a so-far largely unexplored temperature range for such a high accuracy sensor, down to 50 nK. This allows for an improved characterization of the most limiting systematic effect, related to wavefront aberrations of light beamsplitters. A thorough model of the impact of this effect onto the measurement is developed and a method is proposed to correct for this bias based on the extrapolation of the measurements down to zero temperature. Finally, an uncertainty of 13 nm s ^−2 is obtained in the evaluation of this systematic effect, which can be improved further by performing measurements at even lower temperatures. Our results clearly demonstrate the benefit brought by ultracold atoms to the metrological study of free falling atom interferometers. By tackling their main limitation, the method presented here allows reaching record-breaking accuracies for inertial sensors based on atom interferometry.https://doi.org/10.1088/1367-2630/aaf07datom interferometrygravimetryinertial sensorsquantum sensors |
| spellingShingle | R Karcher A Imanaliev S Merlet F Pereira Dos Santos Improving the accuracy of atom interferometers with ultracold sources New Journal of Physics atom interferometry gravimetry inertial sensors quantum sensors |
| title | Improving the accuracy of atom interferometers with ultracold sources |
| title_full | Improving the accuracy of atom interferometers with ultracold sources |
| title_fullStr | Improving the accuracy of atom interferometers with ultracold sources |
| title_full_unstemmed | Improving the accuracy of atom interferometers with ultracold sources |
| title_short | Improving the accuracy of atom interferometers with ultracold sources |
| title_sort | improving the accuracy of atom interferometers with ultracold sources |
| topic | atom interferometry gravimetry inertial sensors quantum sensors |
| url | https://doi.org/10.1088/1367-2630/aaf07d |
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