The space atom laser: An isotropic source for ultra-cold atoms in microgravity

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Meister, M.; Roura, A.; Rasel, E.M.; Schleich, W.P.: The space atom laser: An isotropic source for ultra-cold atoms in microgravity. In: New Journal of Physics 21 (2019), Nr. 1, 13039. DOI:

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Sum total of downloads: 94

Atom laser experiments with Bose-Einstein condensates (BECs) performed in ground-based laboratories feature a coherent and directed beam of atoms which is accelerated by gravity. In microgravity the situation is fundamentally different because the dynamics is entirely determined by the repulsive interaction between the atoms and not by the gravitational force. As a result, the output of a space atom laser is a spherical wave slowly expanding away from the initial BEC. We present a thorough theoretical study of this new source of matter waves based on rf outcoupling which exhibits an isotropic distribution both in position and momentum even for an initially anisotropic trap. The unique geometry of such a freely expanding, shell-shaped BEC offers new possibilities for matter waves in microgravity and is complementary to other matter-wave sources prepared by delta-kick collimation or adiabatic expansion. Our work paves the way for the upcoming experimental realization of a space atom laser making use of NASA's Cold Atom Laboratory on the International Space Station.
License of this version: CC BY 3.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2019
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 41 43.62%
2 image of flag of China China 21 22.34%
3 image of flag of United States United States 20 21.28%
4 image of flag of United Kingdom United Kingdom 2 2.13%
5 image of flag of France France 2 2.13%
6 image of flag of Switzerland Switzerland 2 2.13%
7 image of flag of Taiwan Taiwan 1 1.06%
8 image of flag of Russian Federation Russian Federation 1 1.06%
9 image of flag of India India 1 1.06%
10 image of flag of Canada Canada 1 1.06%
    other countries 2 2.13%

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