> RYDBERG_ARRAY

LITNeutral atoms held in optical tweezers form a lattice made of light. Manetsch et al. (Caltech, Nature 2025) trapped over 6,100 caesium atoms in about 12,000 tweezer sites, with a hyperfine coherence time of 12.6 s, single-qubit gate fidelity 99.9834% and imaging fidelity over 99.99%. Evered et al. (Nature 2023) ran Rydberg two-qubit gates at 99.5% fidelity on up to 60 atoms in parallel. Bluvstein et al. (Nature 2024) ran a logical processor with 48 logical qubits on a reconfigurable array.

MODELA camera-style fluorescence image. Loading fills each site with probability ½ (as in the 6,100-in-12,000 result); the rearranger moves atoms into a defect-free target block. Then a Rydberg pulse: atoms within the blockade radius cannot both be excited, so excitations settle into a checkerboard-like pattern (greedy model).

loadrearrangeRydberg pulse

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