IONQ IncIonQ's trapped-ion technology is highlighted for leading accuracy with 99.99% fidelity, a positive technical achievement.
Investors tracking the quantum computing race face a landscape split among four main technological approaches, each with distinct trade-offs in speed, accuracy, and scalability. The superconducting qubit method, pursued by IBM and Rigetti Computing, offers the fastest gate speeds but suffers from higher error rates and requires expensive near-absolute-zero cooling. Trapped-ion technology, used by IonQ and Quantinuum, leads in accuracy with two-qubit gate fidelities of 99.99% and 99.92% respectively, yet operates exponentially slower and is harder to scale. The neutral-atom approach, which sits between the two in performance, is being developed by Infleqtion, which achieved 99.73% fidelity in 2024 and targets 99.9% this year, while Alphabet also explores the technique. D-Wave Quantum, known for quantum annealing, is now pursuing a hybrid superconducting design through its acquisition of Quantum Circuits, aiming to combine speed with trapped-ion-level accuracy, though verified metrics are not yet available.
IONQ IncIonQ's trapped-ion technology is highlighted for leading accuracy with 99.99% fidelity, a positive technical achievement.
D-Wave Quantum Inc. Common StockD-Wave's hybrid superconducting design via acquisition is mentioned, but no verified metrics are available, making impact unclear.
Rigetti Computing IncRigetti is noted for superconducting qubits with fast speeds but high error rates; no new development is reported.
International Business MachinesIBM is noted for pursuing superconducting qubits, but the article only describes trade-offs without new news.
Infleqtion, Inc.Infleqtion is mentioned as developing neutral-atom quantum computing with 99.73% fidelity, but the article is a general overview and does not provide specific news about the company.
Quantinuum Inc. Class A Common StockQuantinuum is mentioned as using trapped-ion technology with high accuracy, but the article is a general overview and does not provide specific news about the company.
Alphabet Inc Class C