Spatial Coherence of a Strongly Interacting Bose Gas in the Trimerized Kagome Lattice
Quantum Physics
2020-02-05 v1 Quantum Gases
Atomic Physics
Abstract
We produce a trimerized kagome lattice for ultracold atoms using an optical superlattice formed by overlaying triangular lattices generated with two colors of light at a 2:1 wavelength ratio. Adjusting the depth of each lattice tunes the strong intra-trimer (J) and weak inter-trimer (J') tunneling energies, and also the on-site interaction energy U. Two different trimerization patterns are distinguished using matter-wave diffraction. We characterize the coherence of a strongly interacting Bose gas in this lattice, observing persistent nearest-neighbor spatial coherence in the large U/J' limit, and that such coherence displays asymmetry between the strongly and the weakly coupled bonds.
Keywords
Cite
@article{arxiv.1906.11444,
title = {Spatial Coherence of a Strongly Interacting Bose Gas in the Trimerized Kagome Lattice},
author = {Thomas H. Barter and Tsz-Him Leung and Masayuki Okano and Maxwell Block and Norman Y. Yao and Dan M. Stamper-Kurn},
journal= {arXiv preprint arXiv:1906.11444},
year = {2020}
}