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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

Matthias Gersemann
email: gersemanniqo.uni-hannover.de

phone: +49 511 762-4107

Nina Grove
email: groveiqo.uni-hannover.de

phone: +49 511 762-5999

Hendrik Heine
email: heineiqo.uni-hannover.de

phone: +49 511 762-5999

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

phone: +49 511 762-17455

Jonas Matthias
email: matthiasiqo.uni-hannover.de

phone: +49 511 762-5999

Maral Sahelgozin
email: sahelgoziniqo.uni-hannover.de

phone: +49 511 762-5999

Manuel Schilling
email: schillingife.uni-hannover.de

phone: +49 511 762-17669

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

phone: +49 511 762 3398

Selected Publications

Peer-Reviewed Literature

Abend S. and Rasel E. M. (2017): Kompaktes Fontänen-Gravimeter auf einem Atomchip, Physik in unserer Zeit 48, 61-62 (2017)

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
DOI: 10.1103/PhysRevLett.117.203003

Ahlers H., Müntinga H., Wenzlawski A., Krutzik M., Tackmann G., Gaaloul N., Giese E., Roura A., Kuhl R., Lämmerzahl C., Peters A., Windpassinger P., Sengstock K., Schleich W. P., Ertmer W. and Rasel E.M. (2016): Double Bragg Interferometry, Phys. Rev. Lett. 116, 173601 (2016) more
DOI: 10.1103/PhysRevLett.116.173601

Giese E., Friedrich A., Abend S., Rasel E. M. and Schleich W. P. (2016): Light shifts in atomic Bragg diffraction, Phys. Rev. A 94, 063619 (2016) more
DOI: 10.1103/PhysRevA.94.063619

Non Peer-Reviewed Literature

 (2016): Focus: Measuring Gravity with an Atom Chip, Physics 9, 131 more

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, 8th Symposium on Frequency Standards and Metrology, Journal of Physics: Conference Series 723:012050
DOI: 10.1088/1742-6596/723/1/012050
arXiv: 1512.05660

Presentations, Talks and Posters

Gersemann M. (2017): Atom-Chip interferometry with Bose-Einstein condensates, DPG Spring meeting 2017, Mainz, Germany, 06 - 10 March, 2017

Matthias J. and Heine H. (2017): Atom-Chip based BEC sources for compact and transportable experiments, DPG Spring meeting 2017, Mainz, Germany, 06 - 10 March, 2017

Sahelgozin M. (2017): Transportable Quantum Gravimeter - QG-1, DPG Spring meeting 2017, Mainz, Germany, 06 - 10 March, 2017

Abend S. (2016): Atom-chip-based quantum gravimetry for the precise determination of absolute gravity, EGU General Assembly 2016, Vienna, Austria, 17 - 22 April, 2016

Abend S. (2016): Atom-chip fountain gravimeter, DPG Spring meeting 2016, Hannover, Germany, 29 February - 04 March, 2016

Abend S. (2016): Atom-chip based BEC Interferometry, C. Lämmerzahl's birthday colloquium, 08 August, 2016

Gersemann M. (2016): Atom-chip interferometry with Bose-Einstein condensates, FOMO2016 - Frontiers in Matter Wave Optics, 10 - 17 September, 2016

Abend S. (2015): Atom-chip based quantum gravimetry with Bose-Einstein condensates, DAMOP 2015, 10 June, 2015

Matthias J. (2015): Atom-chip based quantum gravimetry with Bose-Einstein condensates, 8th Symposium on Frequency Standards and Metrology, Potsdam, Germany, 12- 16 October, 2015