Realization of a Fermi-Hubbard Optical Tweezer Array

Benjamin M. Spar, Elmer Guardado-Sanchez, Sungjae Chi, Zoe Z. Yan, Waseem S. Bakr

Research output: Contribution to journalArticlepeer-review

42 Scopus citations


We use lithium-6 atoms in an optical tweezer array to realize an eight-site Fermi-Hubbard chain near half filling. We achieve single site detection by combining the tweezer array with a quantum gas microscope. By reducing disorder in the energy offsets to less than the tunneling energy, we observe Mott insulators with strong antiferromagnetic correlations. The measured spin correlations allow us to put an upper bound on the entropy of 0.26(4)kB per atom, comparable to the lowest entropies achieved with optical lattices. Additionally, we establish the flexibility of the tweezer platform by initializing atoms on one tweezer and observing tunneling dynamics across the array for uniform and staggered 1D geometries.

Original languageEnglish (US)
Article number223202
JournalPhysical review letters
Issue number22
StatePublished - Jun 3 2022

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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