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https://hdl.handle.net/2440/116093
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Type: | Journal article |
Title: | Geodesy and metrology with a transportable optical clock |
Author: | Grotti, J. Koller, S. Vogt, S. Häfner, S. Sterr, U. Lisdat, C. Denker, H. Voigt, C. Timmen, L. Rolland, A. Baynes, F. Margolis, H. Zampaolo, M. Thoumany, P. Pizzocaro, M. Rauf, B. Bregolin, F. Tampellini, A. Barbieri, P. Zucco, M. et al. |
Citation: | Nature Physics, 2018; 14(5):437-441 |
Publisher: | Springer Nature |
Issue Date: | 2018 |
ISSN: | 1745-2473 1745-2481 |
Statement of Responsibility: | Jacopo Grotti, Silvio Koller, Stefan Vogt, Sebastian Häfner, Uwe Sterr ... Fred N. Baynes ... et al. |
Abstract: | Optical atomic clocks, due to their unprecedented stability1,2,3 and uncertainty3,4,5,6, are already being used to test physical theories7,8 and herald a revision of the International System of Units9,10. However, to unlock their potential for cross-disciplinary applications such as relativistic geodesy11, a major challenge remains: their transformation from highly specialized instruments restricted to national metrology laboratories into flexible devices deployable in different locations12,13,14. Here, we report the first field measurement campaign with a transportable 87Sr optical lattice clock12. We use it to determine the gravity potential difference between the middle of a mountain and a location 90 km away, exploiting both local and remote clock comparisons to eliminate potential clock errors. A local comparison with a 171Yb lattice clock15 also serves as an important check on the international consistency of independently developed optical clocks. This campaign demonstrates the exciting prospects for transportable optical clocks. |
Rights: | © 2018 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. |
DOI: | 10.1038/s41567-017-0042-3 |
Published version: | http://dx.doi.org/10.1038/s41567-017-0042-3 |
Appears in Collections: | Aurora harvest 3 Mathematical Sciences publications |
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