D-WAVE'S DUAL-RAIL QUBIT GATE HITS 99.9% FIDELITY, CUTTING ERROR-CORRECTION OVERHEAD

Summary from the TLDR Hardware newsletter

D-Wave published research in Nature demonstrating a new two-qubit entangling gate for its superconducting "dual-rail" qubit architecture, which is designed so the most common quantum errors are also the easiest kind to detect and fix. The gate hit roughly 99.9% fidelity with fast ~500 nanosecond operation times, while preserving native hardware-level error detection, meaning errors get caught directly by the qubit design rather than requiring extra correction circuitry bolted on afterward.