Geodesy and metrology with a transportable optical clock

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A90072%2F18%3A00344288" target="_blank" >RIV/68407700:90072/18:00344288 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1038/s41567-017-0042-3" target="_blank" >https://doi.org/10.1038/s41567-017-0042-3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41567-017-0042-3" target="_blank" >10.1038/s41567-017-0042-3</a>

Result language
angličtina
Original language name
Geodesy and metrology with a transportable optical clock
Original language description
Optical atomic clocks, due to their unprecedented stability(1-3) and uncertainty(3-6), are already being used to test physical theories(7,8) and herald a revision of the International System of Units(9,10). However, to unlock their potential for cross-disciplinary applications such as relativistic geodesy(11), a major challenge remains: their transformation from highly specialized instruments restricted to national metrology laboratories into flexible devices deployable in different locations(12-14). Here, we report the first field measurement campaign with a transportable Sr-87 optical lattice clock(12). 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 Yb-171 lattice clock(15) 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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10304 - Nuclear physics

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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