Fig. 5: Long-distance and high-fidelity coherent transport.

a, Schematic and atom survival for a diagonal (blue) or straight (pink) move for ten tweezers (with depth k_B × 0.28 mK) spaced by about 10.6 μm. Despite being shorter, a straight move needs to be executed more slowly than a diagonal one owing to cylindrical lensing. b, Coherence of an atom after being transported diagonally 610 μm (blue) in 1.6 ms or held stationary (grey). c, IRB sequence used to benchmark the move fidelity. Random Clifford gates are interleaved between each of the M (<N) moves, with the total number of gates N constant. d, Benchmarking results for repeated 610-μm diagonal moves. Top, atom survival for varied times, fitted to a clipped Boltzmann distribution (Methods). 1.6-ms moves are used for the middle and bottom panels. Middle, IRB return probability for static and transported atoms. Curves are fits that include coherence and atom losses (Methods). Bottom, average instantaneous transport fidelity after a given number of moves, fitted from the IRB return probability (Methods). The curve width represents the 68% confidence interval. The instantaneous fidelity of 99.953(2)% is constant for the first approximately 30 moves.