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

J. L. Ville, T. Bienaimé, R. Saint-Jalm, L. Corman, M. Aidelsburger, L. Chomaz, K. Kleinlein, D. Perconte, S. Nascimbène, J. Dalibard, and J. Beugnon
Phys. Rev. A 95, 013632 – Published 27 January 2017

Abstract

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 Rb87 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.

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  • Received 23 November 2016

DOI:https://doi.org/10.1103/PhysRevA.95.013632

©2017 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

J. L. Ville1, T. Bienaimé2, R. Saint-Jalm1, L. Corman3, M. Aidelsburger1, L. Chomaz4, K. Kleinlein1, D. Perconte5, S. Nascimbène1, J. Dalibard1, and J. Beugnon1,*

  • 1Laboratoire Kastler Brossel, Collège de France, CNRS, ENS-PSL Research University, UPMC-Sorbonne Universités, 11 place Marcelin-Berthelot, 75005 Paris, France
  • 2INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, 38123 Povo, Italy
  • 3Institute for Quantum Electronics, ETH Zurich, 8093 Zurich, Switzerland
  • 4Institut für Experimentalphysik, Universität Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
  • 5Unité Mixte de Physique, CNRS, Thales, Université Paris-Sud, Université Paris-Saclay, 91767 Palaiseau, France

  • *beugnon@lkb.ens.fr

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Vol. 95, Iss. 1 — January 2017

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