Fast manipulation of Bose-Einstein condensates with an atom chip

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Corgier, R.; Amri, S.; Herr, W.; Ahlers, H.; Rudolph, J. et al.: Fast manipulation of Bose-Einstein condensates with an atom chip. In: New Journal of Physics 20 (2018), Nr. 5, 55002. DOI: https://doi.org/10.1088/1367-2630/aabdfc

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Sum total of downloads: 174




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Abstract: 
We present a detailed theoretical analysis of the implementation of shortcut-to-adiabaticity protocols for the fast transport of neutral atoms with atom chips. The objective is to engineer transport ramps with durations not exceeding a few hundred milliseconds to provide metrologically relevant input states for an atomic sensor. Aided by numerical simulations of the classical and quantum dynamics, we study the behavior of a Bose-Einstein condensate in an atom chip setup with realistic anharmonic trapping. We detail the implementation of fast and controlled transports over large distances of several millimeters, i.e. distances 1000 times larger than the size of the atomic cloud. A subsequent optimized release and collimation step demonstrates the capability of our transport method to generate ensembles of quantum gases with expansion speeds in the picokelvin regime. The performance of this procedure is analyzed in terms of collective excitations reflected in residual center of mass and size oscillations of the condensate. We further evaluate the robustness of the protocol against experimental imperfections.
License of this version: CC BY 3.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2018
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
total perc.
1 image of flag of Germany Germany 95 54.60%
2 image of flag of United States United States 24 13.79%
3 image of flag of China China 15 8.62%
4 image of flag of Russian Federation Russian Federation 12 6.90%
5 image of flag of Ukraine Ukraine 7 4.02%
6 image of flag of Italy Italy 4 2.30%
7 image of flag of United Kingdom United Kingdom 4 2.30%
8 image of flag of India India 3 1.72%
9 image of flag of Netherlands Netherlands 2 1.15%
10 image of flag of Austria Austria 2 1.15%
    other countries 6 3.45%

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