IonQ demonstrates 99.99% two-qubit gate performance

IonQ (IONQ) released the technical papers that demonstrate 99.99% two-qubit gate performance, setting a new quantum computing world record. The performance of quantum computers is limited by the error rate of its two-qubit gates, called “two-qubit gate fidelity.” This single number largely defines quantum computing performance – measuring the accuracy of quantum operations. The company said, “As fidelity improves, fewer errors must be addressed and more complex algorithms can be run. In a landmark technical result, IonQ has achieved the world’s highest two-qubit gate performance, with fidelity exceeding 99.99% – the first and only quantum computing company to cross the ‘four-nines’ benchmark. The demonstration released today, achieved using IonQ’s proprietary Electronic Qubit Control technology (EQC), surpasses the previous world record of 99.97% set in 2024 by Oxford Ionics, now part of IonQ. This new world record represents a critical technical milestone that advances IonQ’s leading quantum technology roadmap. By engineering qubits with record-level fidelity, IonQ has now achieved the hardware performance required for it to scale to millions of qubits by 2030. This is a historic achievement that positions IonQ well ahead of its competitors.”