New 'trick' fixes major flaw in neutral-atom quantum computers — inching us closer to a superpowerful system

Scientists at ETH Zurich have developed a more stable quantum computing operation using a "geometric phase" technique, where two potassium atoms interact based on the path they travel rather than precise laser timing or strength. This makes the swap gate far less sensitive to errors, achieving 99.91% precision across 17,000 qubit pairs. The breakthrough could help build powerful quantum computers requiring as few as 10,000 qubits instead of millions.