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arXiv · 2404.10256

High-speed quantum radio-frequency-over-light communication

Shaocong Liang·Jialin Cheng·Jiliang Qin·Jiatong Li·Yi Shi·Zhihui Yan·Xiaojun Jia·Changde Xie·Kunchi Peng
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Abstract

Quantum dense coding (QDC) means to transmit two classical bits by only transferring one quantum bit, which has enabled high-capacity information transmission and strengthened system security. Continuousvariable QDC offers a promising solution to increase communication rates while achieving seamless integration with classical communication systems. Here, we propose and experimentally demonstrate a high-speed quantum radio-frequency-over-light (RFoL) communication scheme based on QDC with entangled state, and achieve a practical rate of 20 Mbps through digital modulation and RFoL communication. This scheme bridges the gap between quantum technology and real-world communication systems, which bring QDC closer to practical applications and offer prospects for further enhancement of metropolitan communication networks.

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Shaocong Liang, Jialin Cheng, Jiliang Qin, Jiatong Li, Yi Shi, Zhihui Yan, Xiaojun Jia, Changde Xie, Kunchi Peng. 2024-04-16. High-speed quantum radio-frequency-over-light communication. https://doi.org/10.1103/physrevlett.132.140802

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