What made the acquisition so important was Quantum Circuits’ dual-rail qubit technologies and error-correction capabilities. In a paper published in Nature this week, D-Wave detailed a hardware-based approach with a fast two-qubit entangling gate that the delivers high fidelity while retaining the error-correction capabilities of its superconducting dual-rail qubit design (the vendor’s dual-rail quantum processor is below) as the architecture scales. This means that this dual-rail qubit has error correction built in. What this means is that we can first use the dual-rail qubits themselves as physical qubits, use the error detection to obtain . “All of these results highlight that superconducting dual-rail cavity qubits have quickly become an attractive path for achieving fault-tolerant quantum computing.”