Towards Ultracold Fermions in Optical Kagome Lattices

POSTER

Abstract

We report our progress towards incorporating 40K, a fermionic isotope of potassium, into our optical kagome lattice experiment. Due to the highly frustrated nature of the kagome lattice, there is a macroscopic degeneracy in the s-orbital manifold, which results in strong enhancement of interaction effect. This platform is therefore ideal for studying strongly interacting manybody phenomena, such as superfluidity and flat band ferromagnetism. We describe the necessary instrument upgrades on the previous 87Rb machine, as well as several additional capabilities planned for the new experiment.

*We acknowledge support from the NSF QLCI program through grant OMA-2016245 and also NSF grant PHY-1806362, and from the ARO through the MURI program (grant W911NF-17-1-0323).

Publication: C. D. Brown, S.-W. Chang, M. N. Schwarz, T.-H. Leung, V. Kozii, A. Avdoshkin, J. E. Moore, and D. Stamper-Kurn, Science 377, 1319 (2022).

Presenters

  • Shao-wen Chang

    • University of California, Berkeley

Authors

  • Shao-wen Chang

    • University of California, Berkeley

  • Malte Nils Schwarz

    • University of California, Berkeley

  • Rowan Duim

    • University of California, Berkeley

  • Charles D Brown

    • University of California Berkeley

  • Ryan Everly

    • University of California, Berkeley

  • Dan M Stamper-Kurn

    • University of California, Berkeley