Loading and compression of a single two-dimensional Bose gas in an optical accordion

The experimental realization of two-dimensional (2D) Bose gases with a tunable interaction strength is an important challenge for the study of ultracold quantum matter. Here we report on the realization of an optical accordion creating a lattice potential with a spacing that can be dynamically tuned...

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Bibliographic Details
Published in:Physical review. A 2017-01, Vol.95 (1), Article 013632
Main Authors: Ville, J. L., Bienaimé, T., Saint-Jalm, R., Corman, L., Aidelsburger, M., Chomaz, L., Kleinlein, K., Perconte, D., Nascimbène, S., Dalibard, J., Beugnon, J.
Format: Article
Language:English
Subjects:
Physics
Quantum Physics
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Summary:The experimental realization of two-dimensional (2D) Bose gases with a tunable interaction strength is an important challenge for the study of ultracold quantum matter. Here we report on the realization of an optical accordion creating a lattice potential with a spacing that can be dynamically tuned between 11 and 2 μm. We show that we can load ultracold 87Rb atoms into a single node of this optical lattice in the large spacing configuration and then decrease nearly adiabatically the spacing to reach a strong harmonic confinement with frequencies larger than ωz/2π=10 kHz. Atoms are trapped in an additional flat-bottom in-plane potential that is shaped with a high resolution. By combining these tools we create custom-shaped uniform 2D Bose gases with tunable confinement along the transverse direction and hence with a tunable interaction strength.
ISSN:2469-9926
2469-9934
DOI:10.1103/PhysRevA.95.013632