通过有损量子信道的预告式光学纠缠分发：一项比较研究
Heralded optical entanglement distribution via lossy quantum channels: A comparative study
AI总结：
本研究针对有损量子信道的纠缠分发损耗问题，提出三种基于不同光子源与探测器结构的多粒子GHZ态预告式分发方案，对比发现各方案在不同场景下各有优势，为相关电路设计提供参考。
摘要：
量子纠缠是各类量子技术的基础资源。在光学系统中，纠缠分发依赖于光子的不可区分性与空间重叠。预告式方案通过探测辅助光子来发出所需纠缠态已生成的信号，在保障纠缠生成可靠性方面发挥关键作用。然而，量子信道中的光子损耗仍是一项重大挑战，限制了纠缠分发的距离与容量。本研究提出了三种通过有损量子信道分发多粒子Greenberger-Horne-Zeilinger（GHZ）态的预告式方案。这些方案采用不同的光子源（Bell态或单光子）与信道结构（集中式或分散式预告探测器）。通过比较成功概率与预告效率，我们发现根据参与方数量、信道距离以及安全要求的不同，每种方案各有其优势。该分析为设计适用于有损信道上量子信息处理的高鲁棒性预告电路提供了思路。
英文摘要：
Quantum entanglement serves as a foundational resource for various quantum technologies. In optical systems, entanglement distribution rely on the indistinguishability and spatial overlap of photons. Heralded schemes play a crucial role in ensuring the reliability of entanglement generation by detecting ancillary photons to signal the creation of desired entangled states. However, photon losses in quantum channels remain a significant challenge, limiting the distance and capacity of entanglement distributions. This study suggests three heralded schemes that distribute multipartite Greenberger-Horne-Zeilinger (GHZ) states via lossy quantum channels. These schemes utilize different photon sources (Bell states or single-photons) and channel structures (centralized or decentralized heralding detectors). By comparing success probabilities and heralding efficiency, we find that each scheme has its own advantage according to the number of parties and the channel distance and the security requirement. This analysis provides insights into designing resilient heralded circuits for quantum information processing over lossy channels.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
