Self-alignment of a compact large-area atomic Sagnac interferometer
G. Tackmann,P. Berg,Christian Schubert,Sven Abend,M. Gilowski,Wolfgang Ertmer,Ernst M. Rasel +6 more
TLDR
In this article, an atomic Mach?Zehnder-type Sagnac interferometer with a length of 13.7 cm is presented, which covers an area of 19mm2.Abstract:
We report on the realization of a compact atomic Mach?Zehnder-type Sagnac interferometer of 13.7?cm length, which covers an area of 19?mm2 previously reported only for large thermal beam interferometers. According to Sagnac's formula, which holds for both light and atoms, the sensitivity for rotation rates increases linearly with the area enclosed by the interferometer. The use of cold atoms instead of thermal atoms enables miniaturization of Sagnac interferometers without sacrificing large areas. In comparison with thermal beams, slow atoms offer better matching of the initial beam velocity and the velocity with which the matter waves separate. In our case, the area is spanned by a cold atomic beam of 2.79?m?s?1, which is split, deflected and combined by driving a Raman transition between the two hyperfine ground states of 87Rb in three spatially separated light zones. The use of cold atoms requires a precise angular alignment and high wave front quality of the three independent light zones over the cloud envelope. We present a procedure for mutually aligning the beam splitters at the microradian level by making use of the atom interferometer itself in different configurations. With this method, we currently achieve a sensitivity of .read more
Citations
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Quantum Test of the Universality of Free Fall
Dennis Schlippert,Jonas Hartwig,Henning Albers,Logan Richardson,Christian Schubert,Albert Roura,Wolfgang P. Schleich,Wolfgang P. Schleich,Wolfgang Ertmer,Ernst M. Rasel +9 more
TL;DR: In this paper, a new experiment using matter-wave interferometry confirms that different atoms free fall in gravity at the same rate in the same way as other atoms in the universe.
Journal ArticleDOI
STE-QUEST—test of the universality of free fall using cold atom interferometry
Deborah N. Aguilera,Holger Ahlers,Baptiste Battelier,Ahmad Bawamia,Andrea Bertoldi,Ruxandra Bondarescu,Kai Bongs,Philippe Bouyer,Claus Braxmaier,Claus Braxmaier,Luigi Cacciapuoti,C. P. Chaloner,M. Chwalla,Wolfgang Ertmer,Matthias O. Franz,Naceur Gaaloul,Martin Gehler,D. Gerardi,Lluis Gesa,Norman Gürlebeck,Jonas Hartwig,M. Hauth,Ortwin Hellmig,Waldemar Herr,Sven Herrmann,A. Heske,Andrew Hinton,P. Ireland,Philippe Jetzer,Ulrich Johann,Markus Krutzik,A. Kubelka,Claus Lämmerzahl,Arnaud Landragin,Ivan Lloro,Didier Massonnet,Ignacio Mateos,Alexander Milke,Miquel Nofrarías,Markus Oswald,Achim Peters,Katerine Posso-Trujillo,Ernst M. Rasel,E. Rocco,Albert Roura,Jan Rudolph,Wolfgang P. Schleich,Christian Schubert,Thilo Schuldt,Stephan Seidel,Klaus Sengstock,Carlos F. Sopuerta,Fiodor Sorrentino,D. Summers,Guglielmo M. Tino,C. Trenkel,N. Uzunoglu,W. von Klitzing,Reinhold Walser,Thijs Wendrich,André Wenzlawski,Peter Weßels,Andreas Wicht,Eric Wille,Mike Williams,Patrick Windpassinger,Nassim Zahzam +66 more
TL;DR: The spacetime explorer and quantum equivalence principle space test satellite mission, proposed as a medium-size mission within the Cosmic Vision program of the European Space Agency (ESA), aims for testing general relativity with high precision in two experiments by performing a measurement of the gravitational redshift of the Sun and the Moon by comparing terrestrial clocks, and by performing the universality of free fall of matter waves in the gravitational field of Earth comparing the trajectory of two Bose-Einstein condensates of 85Rb and 87Rb as mentioned in this paper.
Journal ArticleDOI
Composite-light-pulse technique for high-precision atom interferometry.
P. Berg,Sven Abend,G. Tackmann,Christian Schubert,Enno Giese,Wolfgang P. Schleich,Frank A. Narducci,Wolfgang Ertmer,Ernst M. Rasel +8 more
TL;DR: The method of composite pulses is demonstrated by creating a symmetric matter-wave interferometers which combines the advantages of conventional Bragg- and Raman-type concepts and leads to an interferometer with a high immunity to technical noise.
Journal ArticleDOI
STE-QUEST - Test of the Universality of Free Fall Using Cold Atom Interferometry
Deborah N. Aguilera,Holger Ahlers,Baptiste Battelier,Ahmad Bawamia,Andrea Bertoldi,Ruxandra Bondarescu,Kai Bongs,Philippe Bouyer,Claus Braxmaier,Claus Braxmaier,Luigi Cacciapuoti,C. P. Chaloner,M. Chwalla,Wolfgang Ertmer,Matthias O. Franz,Naceur Gaaloul,Martin Gehler,D. Gerardi,Lluis Gesa,Norman Gürlebeck,Jonas Hartwig,M. Hauth,Ortwin Hellmig,Waldemar Herr,Sven Herrmann,A. Heske,Andrew Hinton,P. Ireland,Philippe Jetzer,Ulrich Johann,Markus Krutzik,A. Kubelka,Claus Lämmerzahl,Arnaud Landragin,Ivan Lloro,Didier Massonnet,Ignacio Mateos,Alexander Milke,Miquel Nofrarías,Markus Oswald,Achim Peters,Katerine Posso-Trujillo,Ernst M. Rasel,E. Rocco,Albert Roura,Jan Rudolph,Wolfgang P. Schleich,Christian Schubert,Thilo Schuldt,Stephan Seidel,Klaus Sengstock,Carlos F. Sopuerta,Fiodor Sorrentino,D. Summers,Guglielmo M. Tino,C. Trenkel,N. Uzunoglu,W. von Klitzing,Reinhold Walser,Thijs Wendrich,André Wenzlawski,Peter Weßels,Andreas Wicht,Eric Wille,Mike Williams,Patrick Windpassinger,Nassim Zahzam +66 more
TL;DR: The STE-QUEST satellite mission as mentioned in this paper is a medium-size mission within the Cosmic Vision program of the European Space Agency (ESA), which aims to test general relativity with high precision in two experiments by performing a measurement of the gravitational redshift of the Sun and the Moon by comparing terrestrial clocks, and by comparing the trajectories of two Bose-Einstein condensates of Rb85 and Rb87.
Journal ArticleDOI
Atom-Chip Fountain Gravimeter
Sven Abend,Martina Gebbe,Matthias Gersemann,Holger Ahlers,Hauke Müntinga,Enno Giese,Enno Giese,Naceur Gaaloul,Christian Schubert,Claus Lämmerzahl,Wolfgang Ertmer,Wolfgang P. Schleich,Wolfgang P. Schleich,Ernst M. Rasel +13 more
TL;DR: This work demonstrates a quantum gravimeter by combining the advantages of an atom chip for the generation, delta-kick collimation, and coherent manipulation of freely falling Bose-Einstein condensates with an innovative launch mechanism based on Bloch oscillations and double Bragg diffraction.
References
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Journal ArticleDOI
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Journal ArticleDOI
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