A new ion-based quantum computer makes error correction simpler

Quantinuum unveiled Helios, a third-generation quantum computer that makes error correction significantly more efficient by using just two physical qubits to create one logical qubit, compared to competitors like Google which needed 105. The machine uses movable barium ions that can interact with each other in ways that superconducting circuits cannot, achieving 99.921% accuracy in qubit operations—the highest reported level in the industry.