This paper demonstrates a boson sampler using ultracold atoms in a two-dimensional optical lattice. The system leverages fast and programmable atom preparation, low-loss propagation, and high-fidelity detection. Experiments involving up to 180 atoms are conducted, focusing on targeted tests to verify indistinguishability, characterize unitary evolution, and observe bunching features due to interference. The results show strong evidence of bosonic behavior and sampling from a large state space, though direct verification is infeasible at this scale. The approach paves the way for simulating interacting systems and Hubbard models.

Aaron Young, Shawn Geller, William Eckner, Nathan Schine, Scott Glancy, Emanuel Knill, Adam Kaufman