Ultracold atom interferometry in space

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Lachmann, M.D.; Ahlers, H.; Becker, D.; Dinkelaker, A.N.; Grosse, J. et al.: Ultracold atom interferometry in space. In: Nature Communications 12 (2021), 1317. DOI: https://doi.org/10.1038/s41467-021-21628-z

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Bose-Einstein condensates (BECs) in free fall constitute a promising source for space-borne interferometry. Indeed, BECs enjoy a slowly expanding wave function, display a large spatial coherence and can be engineered and probed by optical techniques. Here we explore matter-wave fringes of multiple spinor components of a BEC released in free fall employing light-pulses to drive Bragg processes and induce phase imprinting on a sounding rocket. The prevailing microgravity played a crucial role in the observation of these interferences which not only reveal the spatial coherence of the condensates but also allow us to measure differential forces. Our work marks the beginning of matter-wave interferometry in space with future applications in fundamental physics, navigation and earth observation.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2021
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 42 49.41%
2 image of flag of United States United States 18 21.18%
3 image of flag of China China 15 17.65%
4 image of flag of Korea, Republic of Korea, Republic of 2 2.35%
5 image of flag of Austria Austria 2 2.35%
6 image of flag of No geo information available No geo information available 1 1.18%
7 image of flag of Taiwan Taiwan 1 1.18%
8 image of flag of India India 1 1.18%
9 image of flag of Israel Israel 1 1.18%
10 image of flag of Belgium Belgium 1 1.18%
    other countries 1 1.18%

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