AI 中文总结
研究提出在基于中继器的量子网络中分布GHZ等效态的新方案，关注传输退相干。该方案能让远程用户共享图态用于多种量子通信协议，仅需O(N)个量子比特，结合线性缩放合并过程支持高效大规模图态分布，经模拟验证有效实用。
AI 中文摘要
本研究提出了一种在基于中继器的量子网络中分布GHZ等效态的新颖方案，特别关注传输过程中退相干效应的分析与缓解。该方案使远程用户能够共享图态，可用于实现各种量子通信协议，如量子密钥分发和量子秘密共享。与现有方法相比，此分布式方案仅需O(N)个量子比特，且不引入冗余纠缠结构。结合线性缩放合并过程，该框架支持更高效的大规模图态分布。利用量子网络模拟工具NetSquid评估其可行性和正确性，模拟结果表明该方法对在量子网络中执行量子通信协议既有效又实用。
英文摘要
This study proposes a novel scheme for distributing GHZ-equivalent states across repeater-based quantum networks, with particular focus on the analysis and mitigation of decoherence effects during transmission. The proposed scheme enables remote users to share graph states, which can be leveraged to implement various quantum communication protocols, such as quantum key distribution and quantum secret sharing. Compared with existing approaches, the proposed distributed scheme requires only O(N) qubits without introducing redundant entanglement structures. Together with the linear-scaling merging procedure in both controlled gate count and qubit usage, the proposed framework supports more efficient large-scale graph state distribution. To evaluate its feasibility and correctness, this study utilizes the quantum network simulation tool, NetSquid, to implement the proposed scheme. Simulation results demonstrate that the proposed approach is both effective and practical for executing quantum communication protocols within quantum networks.
