Figure | Synthesizing topological atomic trimer array with tunable interaction. (IMAGE)
Caption
Figure | Synthesizing topological atomic trimer array with tunable interaction. a, A topological trimer array is implemented in momentum lattices, based on the laser-driven Bragg transitions between the discrete atomic momentum states. The intra- and intercell hopping rates can be individually controlled by addressing each Bragg transition. Atoms are prepared at two leftmost sites with equal weight and a relative phase. b, Energy spectra of a trimer array in the noninteracting limit. The red lines represent topological edge states. c, Eigenmodes of topological trimer array correspond to the black dots in b. Two in-phase (out-of-phase) peaks characterize the modes 1 and 2 (modes 3 and 4). d, Illustration of the density-dependent, nonlinear energy induced by the atomic interactions.
Credit
Huiying Du et al.
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