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Researchers at Origin Quantum and Chinese institutions have demonstrated coherent quantum routers on a superconducting processor, achieving 94.8% fidelity for individual units and enabling novel quantum random access memory architectures. By utilizing transition composite gates and nonadjacent qutrit states, this design reduces circuit depth while integrating erasure-detection to mitigate routing errors, marking a significant step toward scalable quantum information management.

Sources coveringQuantum Zeitgeist, Quantum Computing Report, arXiv

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Origin Quantum Superconducting processor routes qubits coherently

Quantum ZeitgeistAugust 26, 20264 min read

Researchers demonstrated coherent quantum routers on a superconducting processor, essential for bucket-brigade quantum random access memory.

Researchers affiliated with institutions in China, in collaboration with Origin Quantum, have demonstrated coherent quantum routers, essential components for a novel quantum random access memory system on a superconducting processor. The quantum router at the core of their implementation utilizes a transition composite gate scheme, preserving straightforward initialization while reducing circuit complexity; experiments achieved an average fidelity of 94.8% across three individual routers. A two-layer quantum routing network achieved a fidelity of 82.4%. These results represent an advancement in quantum routing technology, providing…

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