On January 6, 2024, at a research facility in Hefei, Anhui Province, China, operated by Origin Quantum Computing Technology (æ¬æºéå计ç®ç§æ), the third-generation superconducting quantum computer "Origin Wukong" began operation. More than two years later, in September 2026, Chinese state media outlets including Science and Technology Daily and Global Times reported one after another that a "quantum router" running on this Wukong processor had achieved a transmission efficiency of up to 98%. The reports were quickly picked up and reprinted by some English-language outlets, framed as a "breakthrough toward large-scale quantum memory." In everyday conversation, the word "router" typically conjures images of communication equipment relaying photons across long-distance fiber-optic networks, or repeaters connecting nodes in a quantum internet. But this experiment was not concerned with inter-city communication infrastructure. It concerns an on-chip componentâcooled to near absolute zero inside a dilution refrigerator on a single silicon dieâthat directs information exchanged between adjacent qubits. At the core of the announcement is the fact that a building block for constructing bucket-brigade quantum random access memory (QRAM), long considered a theoretical challenge, was operated on real hardware. The published figure of "98%" cannot be taken at face value. There is a structure behind the number that demands careful reading: the transmission efficiency of a single unit, the drop in fidelity when scaling to multiple layers, and the time lag between the paper's publication and its media promotion. ãã¼ã¿ã表ã§è¦ã | | Measured value (%) | |---|---| | Single router transmission efficiency | 98 | | Two-layer network transmission efficiency | 93 | | Single router fidelity (max paper value) | 95.74 | | Single router fidelity (reported average) | 94.8 | | Two-layer network fidelity (average) | 82.4 | As the chart shows, while single-unit transmission efficiency reaches 98%, the numbers decline progressively when scaling to