Fig. 1 — Representative single-shot image of single caesium atoms across an 11,998-site tweezer arrayexternal image — opens at the sourceFluorescence image (panel a of Fig. 1) of single caesium atoms, each a bright spot on a square grid of optical-tweezer sites, filling a roughly circular region on black. It is from 'A tweezer array with 6,100 highly coherent atomic qubits' by Hannah J. Manetsch, Manuel Endres and colleagues (Caltech), Nature, September 2025. Each tweezer is a focused laser spot holding at most one atom; notice the random gaps, since loading is chance-based and atoms must later be rearranged to fill a defect-free array.