IonQ Hits 99.99% Fidelity as IBM, Infleqtion and D-Wave Push 4 Quantum Paths
Updated
Updated · The Globe and Mail · Jun 17
IonQ Hits 99.99% Fidelity as IBM, Infleqtion and D-Wave Push 4 Quantum Paths
3 articles · Updated · The Globe and Mail · Jun 17
Summary
Four quantum-computing approaches are emerging with clear trade-offs: superconducting qubits lead on speed, trapped ions on accuracy, neutral atoms sit between them, and quantum annealing remains specialized.
99.99% 2-qubit gate fidelity at IonQ and 99.92% at Quantinuum put trapped-ion systems ahead on accuracy, though the report says they are exponentially slower and harder to scale than superconducting designs.
IBM’s superconducting systems benefit from fast gate speeds and conventional chip-fab manufacturing, but lower fidelity and heavy cooling needs still force the company to focus on error-correction advances.
Infleqtion reported 99.73% 2-qubit fidelity in 2024 and targets 99.9% this year with neutral atoms, while D-Wave is trying to extend beyond optimization-focused annealing through a hybrid superconducting effort that still lacks verified metrics.
With billions invested, which quantum technology will actually win the race to widespread commercial use?
As quantum hardware scales, is the real bottleneck technology, talent, or finding practical business problems to solve?
Is the quantum threat to global encryption an imminent crisis, or is the focus on it still premature?
Quantum Computing 2026: Fidelity Breakthroughs, U.S. Strategic Investment, and the Hardware Race for Trillions
Overview
IonQ is pushing the boundaries of quantum computing by focusing on improving two-qubit gate fidelity, a key factor that limits quantum computer performance. As fidelity improves, errors decrease, allowing more complex algorithms to run successfully. IonQ’s strategy centers on a modular and networked architecture, which has attracted attention and led to its selection for DARPA’s HARQ programme. This program highlights the importance of modular quantum systems as a promising path toward fault-tolerant computing. By advancing both technology and architecture, IonQ is enabling more powerful and reliable quantum computers for the future.