Fast, continuous, and coherent atom reloading in a neutral-atom qubit array.

Fast, continuous atom reloading in Yb qubit arrays achieves up to 500 reloads per second, enabling scalable, fault-tolerant quantum circuits with unlimited depth.

• Why it matters: Efficient management of atom loss is crucial for deep quantum circuits, yet current methods are too slow, hindering the development of large-scale quantum processors.
• What they did: The study demonstrates a reloading technique using a metastable Yb reservoir, allowing on-demand atom extraction with tweezers at high rates, and initializing new arrays at 30 times per second.
• The result: This approach maintains existing qubits undisturbed and provides a foundation for implementing fast, fully fault-tolerant quantum computing with continuous atom replenishment.