ETH Zurich demonstrates 17,000 qubit array with 99.91% fidelity

ETH Zurich researchers have demonstrated a robust swap gate on neutral-atom qubits using geometric phase, achieving 99.91% fidelity across 17,000 qubit pairs simultaneously. Unlike previous approaches relying on tunneling or collisions, the geometric-phase method is largely independent of laser intensity fluctuations. The work, published in Nature, represents a significant step toward scalable neutral-atom quantum computers.