Implementation of a quantum addressable router using superconducting qubits

C. Miao, S. Léger, Z. Li, G. Lee, L. Jiang, et al. · 2025 · arXiv

| 编号 QR012 | 主题 硬件与实验 | 链接 arXiv:2503.04295 |

摘要

摘要保留原文（英文）

摘要取自 arXiv / 出版方元数据，未作翻译，以保证与原文一致。

The implementation of a quantum router capable of performing both quantum signal routing and quantum addressing (a $\overline{{\mathrm{Q}}^2-\mathrm{router})}$ represents a key step toward building quantum networks and quantum random access memories. We realize a ${\mathrm{Q}}^2$ -router that uses fixed-frequency transmon qubits to implement a routing protocol based on two native controlled-iSWAP gates. These gates leverage a large ZZ interaction to selectively route information according to a quantum address. We find an estimated average routing fidelity of 95.3%, with errors arising primarily from decoherence or state preparation and measurement. We present a comprehensive calibration and characterization of both the c-iSWAP gates and the overall routing protocol through randomized benchmarking techniques and state tomography.

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