A high-flux BEC source for mobile atom interferometers

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Rudolph, Jan; Herr, Waldemar; Grzeschik, Christoph; Sternke, Tammo; Grote, Alexander et al.: A high-flux BEC source for mobile atom interferometers. In: New Journal of Physics 17 (2015), 65001. DOI: http://dx.doi.org/10.1088/1367-2630/17/6/065001

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Quantum sensors based on coherent matter-waves are precise measurement devices whose ultimate accuracy is achieved with Bose-Einstein condensates (BECs) in extended free fall. This is ideally realized in microgravity environments such as drop towers, ballistic rockets and space platforms. However, the transition from lab-based BEC machines to robust and mobile sources with comparable performance is a challenging endeavor. Here we report on the realization of a miniaturized setup, generating a flux of 4x10(5) quantum degenerate Rb-87 atoms every 1.6 s. Ensembles of 1 x 10(5) atoms can be produced at a 1 Hz rate. This is achieved by loading a cold atomic beam directly into a multi-layer atom chip that is designed for efficient transfer from laser-cooled to magnetically trapped clouds. The attained flux of degenerate atoms is on par with current lab-based BEC experiments while offering significantly higher repetition rates. Additionally, the flux is approaching those of current interferometers employing Raman-type velocity selection of laser-cooled atoms. The compact and robust design allows for mobile operation in a variety of demanding environments and paves the way for transportable high-precision quantum sensors.
License of this version: CC BY 3.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2015-06-01
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 254 74.71%
2 image of flag of United States United States 25 7.35%
3 image of flag of China China 20 5.88%
4 image of flag of United Kingdom United Kingdom 5 1.47%
5 image of flag of France France 5 1.47%
6 image of flag of India India 4 1.18%
7 image of flag of Czech Republic Czech Republic 4 1.18%
8 image of flag of Russian Federation Russian Federation 3 0.88%
9 image of flag of Japan Japan 2 0.59%
10 image of flag of Brazil Brazil 2 0.59%
    other countries 16 4.71%

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