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Logo: Sonderforschungsbereich geo-Q
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Logo: Sonderforschungsbereich geo-Q
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A01 - Transportable quantum gravimeter

The transportable quantum gravimeter QG-1
The transportable quantum gravimeter QG-1

Atom-interferometer-based gravimeters have been showing impressive results in highly precise and accurate gravity measurements for ground-based Earth observation.

The transportable quantum gravimeter will perform absolute gravimetry with quasi-continuous measurements beyond state-ofthe-art performance by combining the advantages of current so-called classical absolute gravimeters (highly accurate gravity measurement) and continuously measuring devices (low drifts over long times and gravity measurement repeatability). It will thereby fill an important gap in the range of gravity sensors and thus enable monitoring oceanic, atmospheric and hydrological mass variations as well as solid Earth processes.

Compared to present transportable atom interferometers the quantum gravimeter combines for the first time a variety of innovations in a transportable device such as an atom-chip based source and novel interferometer types. Employing an atom source, which produces ultra-cold samples of atoms with temperatures below the µK regime or at quantum degeneracy, the transportable gravimeter can utilize atomic ensembles with very low divergence. This strongly reduces bias effects in the gravity measurement currently limiting interferometers based on laser-cooled atoms.

Scientists working on this project

Sven Abend
email: abendiqo.uni-hannover.de

phone: +49 511 4107
details

Matthias Gersemann
email: gersemanniqo.uni-hannover.de

phone: +49 511 762-4107
details

Nina Grove
email: groveiqo.uni-hannover.de

phone: +49 511 762-5999
details

Hendrik Heine
email: heineiqo.uni-hannover.de

phone: +49 511 762-5999
details

Dr. Waldemar Herr
email: herriqo.uni-hannover.de

phone: +49 511 762-17455
details

Jonas Matthias
email: matthiasiqo.uni-hannover.de

phone: +49 511 5999
details

Maral Sahelgozin
email: sahelgoziniqo.uni-hannover.de

phone: +49 511 5999
details

Dr.-Ing. Ludger Timmen
email: timmenife.uni-hannover.de

phone: +49 511 762 3398
details

Selected Publications


Peer-Reviewed Literature

Abend S., Gebbe M., Gersemann M., Ahlers H., Müntinga H., Giese E., Gaaloul N., Schubert C., Lämmerzahl C., Ertmer W., Schleich W. P. and Rasel E. M. (2016): Atom-Chip Fountain Gravimeter, PRL 117, 203003 more
DOI: 10.1103/PhysRevLett.112.203002

Voigt C., Denker H. and Timmen L.  (2016): Time-variable gravity potential components for optical clock comparisons and the definition of international time scales, Metrologia, Accepted 29 July more
DOI: 10.1088/0026-1394/53/6/1365


Non Peer-Reviewed Literature

Freier C., Hauth M., Schkolnik V., Leykauf B., Schilling M., Wziontek H., Scherneck H., Müller J. and Peters A. (2015): Mobile quantum gravity sensor with unprecedented stability
DOI: 10.1088/1742-6596/723/1/012050
arXiv: 1512.05660

Voigt C., Denker H. and Timmen L. (2015): Investigation of time-variable components of the gravity potential for optical clock comparisons, XXVI General Assembly of the International Union of Geodesy and Geophysics (IUGG), Earth and Environmental Sciences for Future Generations, Prague, Czech Republic, 22 June – 02 July 2015, Abstract G02p-423
DOI: 10.1088/0026-1394/53/6/1365