| Beijing quantum computer maker claims China's first continuous atom reloading, on a machine with a 4,000-qubit array Beijing startup Nakai Quantum says its Qiyuan-1 neutral-atom quantum computer can continuously load fresh atoms, which 36Kr reports no Chinese team had shown publicly before, and that the same machine has assembled a fully occupied array of about 4,000 qubits (quantum bits). Neutral-atom machines hold atoms in laser beams as qubits and lose them as they run, so they normally pause to reload. Continuous loading keeps neutral-atom machines running for hours rather than fractions of a second, which long, useful quantum computations depend on. Harvard's Lukin group first showed continuous loading in 2025, keeping more than 3,000 atoms running for over two hours. Nakai says it carries fresh atoms in on one moving laser conveyor where Lukin's group used two. Qiyuan-1 is scheduled for formal release in the fourth quarter of 2026. |