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Atom Interferometer Measurement of the Newtonian Constant of Gravity
Abstract
We measured the Newtonian constant of gravity, G , using a gravity gradiometer based on atom interferometry. The gradiometer measures the differential acceleration of two samples of laser-cooled Cs atoms. The change in gravitational field along one dimension is measured when a well-characterized Pb mass is displaced. Here, we report a value of G = 6.693 × 10 –11 cubic meters per kilogram second squared, with a standard error of the mean of ±0.027 × 10 –11 and a systematic error of ±0.021 × 10 –11 cubic meters per kilogram second squared. The possibility that unknown systematic errors still exist in traditional measurements makes it important to measure G with independent methods.
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Cited by
Atom interferometry with up to 24-photon-momentum-transfer beam splitters
Müller, H., Chiow, S.-W., Long, Q., Herrmann, S., & Chu, S. (2008) · Physical Review Letters · doi:10.1103/physrevlett.100.180405 · Cited by 290
Precision measurement of the Newtonian gravitational constant
Xue, C., Liu, J.-P., Li, Q., Wu, J.-F., Yang, S.-Q., Liu, Q., Shao, C.-G., Tu, L.-C., Hu, Z.-K., & Luo, J. (2020) · National Science Review · doi:10.1093/nsr/nwaa165 · Cited by 60
Precision bounds for gradient magnetometry with atomic ensembles
Apellaniz, I., Urizar-Lanz, I., Zimborás, Z., Hyllus, P., & Tóth, G. (2018) · Physical Review A · doi:10.1103/physreva.97.053603 · Cited by 45
Metadata
- Authors
- Fixler, J. B., Foster, G. T., McGuirk, J. M., & Kasevich, M. A.
- Venue
- Science
- Published
- 2007-01-05
- Volume
- 315
- Issue
- 5808
- Pages
- 74-77
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2009012440
- Cited by
- 554
- References
- 0
- FWCI
- 28.58
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
