D-Wave Systems tested entanglement on dual-rail qubits and achieved 99.9% two-qubit fidelity, the company said in an announcement detailing results from gate-based hardware research published in Nature.
The result marks the first time the company has publicly demonstrated gate-based quantum computing capabilities alongside its established annealing platform. D-Wave has historically built quantum annealers, specialized systems that solve optimization problems by finding energy minima. The new dual-rail architecture represents a departure into general-purpose gate-based systems, where qubits perform arbitrary logic operations rather than annealing sequences.
D-Wave's dual-rail qubits encode quantum information across two physical rails, reducing errors that arise when manipulating single-rail qubits. The company measured two-qubit gate times of 500 nanoseconds and coherence times in the millisecond range. Those figures exceed performance benchmarks for many competing qubit modalities at similar scales. The 99.9% fidelity threshold approaches error rates tolerable for fault-tolerant quantum computing, though systems operating at scale require fidelities in the 99.99% or higher range.
The roadmap shift began in June 2026 when D-Wave announced plans to develop gate-based systems alongside its annealing product line. The company positioned gate-based hardware as a complement to its existing quantum annealer business rather than a replacement. Quantum annealing remains optimized for specific problem classes, while gate-based systems can execute arbitrary quantum algorithms.
D-Wave's move into gate-based quantum computing occurs as the broader quantum hardware field fragments. IBM, Google, and Atom Computing have invested heavily in superconducting qubits, neutral atoms, and ion traps respectively. Each modality trades off coherence time, gate fidelity, qubit count, and scaling pathway. No single approach has yet achieved the 1,000-plus logical qubits industry analysts consider necessary for practical commercial applications.
The company is publicly traded on Nasdaq under ticker QBTS. Its market position depends partly on demonstrating viable paths beyond annealing as the quantum computing field matures. Entanglement fidelity metrics offer investors a technical benchmark to track hardware progress, though the gap between laboratory demonstrations and commercial quantum advantage remains wide.
D-Wave's next phase involves scaling dual-rail qubit arrays and testing error correction codes on the platform. The timeline for commercial gate-based systems has not been publicly stated. If the company does not publish scaled system results by end of 2027, its claim to viability in gate-based quantum computing will rest on a single-paper foundation while competitors continue to expand qubit counts and lower error rates.
