Proposal of quantum repeater architecture based on Rydberg atom quantum processors

• URL: http://arxiv.org/abs/2410.12523v1
• Date: Wed, 16 Oct 2024 13:02:36 GMT
• Title: Proposal of quantum repeater architecture based on Rydberg atom quantum processors
• Authors: Yan-Lei Zhang, Qing-Xuan Jie, Ming Li, Shu-Hao Wu, Zhu-Bo Wang, Xu-Bo Zou, Peng-Fei Zhang, Gang Li, Tiancai Zhang, Guang-Can Guo, Chang-Ling Zou,
• Abstract summary: Large-scale quantum networks require the generation of high-fidelity quantum entanglement states between remote quantum nodes. Here, we propose a novel quantum repeater architecture that integrates Rydberg atom quantum processors with optical cavities to overcome these challenges. Numerical simulations, incorporating realistic experimental parameters, demonstrate the generation of Bell states with 99% fidelity at rates of 1.1,kHz between two nodes in local-area network.
• Score: 8.931377602479
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• Abstract: Realizing large-scale quantum networks requires the generation of high-fidelity quantum entanglement states between remote quantum nodes, a key resource for quantum communication, distributed computation and sensing applications. However, entanglement distribution between quantum network nodes is hindered by optical transmission loss and local operation errors. Here, we propose a novel quantum repeater architecture that synergistically integrates Rydberg atom quantum processors with optical cavities to overcome these challenges. Our scheme leverages cavity-mediated interactions for efficient remote entanglement generation, followed by Rydberg interaction-based entanglement purification and swapping. Numerical simulations, incorporating realistic experimental parameters, demonstrate the generation of Bell states with 99\% fidelity at rates of 1.1\,kHz between two nodes in local-area network (distance $0.1\,\mathrm{km}$), and can be extend to metropolitan-area ($25\,\mathrm{km}$) or intercity ($\mathrm{250\,\mathrm{km}}$, with the assitance of frequency converters) network with a rate of 0.1\,kHz. This scalable approach opens up near-term opportunities for exploring quantum network applications and investigating the advantages of distributed quantum information processing.

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