分布式变分量子计算与确定性纠缠调控
Distributed variational quantum computing with deterministic entanglement tuning
浏览论文内容
中文总结 AI 辅助
针对分布式量子计算中通用门隐形传送开销大、保真度低的问题，提出基于确定性纠缠调控的分布式变分量子计算协议，仅用局域操作和经典通信调制预共享纠缠，实验验证了其在分子和格点模型基态能量估算中的有效性。
中文摘要 AI 辅助
分布式量子计算通过纠缠空间分离的处理器，为量子信息处理提供了一条可扩展的路径。尽管门隐形传送能够在分布式节点间实现通用计算，但它需要反复消耗高保真度的贝尔对、辅助量子比特以及实时前馈，这带来了显著的额外开销并降低了保真度。然而，许多变分量子算法并不要求完全的通用性；相反，它们依赖于足够的表达能力来有效探索解空间。基于此，我们提出了一种基于确定性纠缠调控的分布式变分量子计算协议。与概率性滤波不同，我们的方法仅利用局域操作和经典通信，确定性地调制预共享的纠缠。我们通过估算He-H$^+$分子和Schwinger模型的基态能量进行了原理验证实验，表明可以设计出多样化的纠缠水平以满足特定问题的需求。我们的结果为近期分布式量子应用提供了一种实用的替代方案。
英文摘要
Distributed quantum computing offers a scalable route to quantum information processing by entangling spatially separated processors. Although gate teleportation enables universal computation across distributed nodes, it requires repeated consumption of high-fidelity Bell pairs, ancillary qubits, and real-time feedforward, which imposes significant overhead and reduces fidelity. However, many variational quantum algorithms do not demand full universality; rather, they rely on sufficient expressibility to explore solution spaces effectively. Building on this, we propose a distributed variational quantum computing protocol based on deterministic entanglement tuning. In contrast to probabilistic filtering, our approach deterministically modulates pre-shared entanglement using only local operations and classical communication. We validate the protocol through a proof-of-principle experiment by estimating ground-state energies of the He-H$^+$ molecule and the Schwinger model, showing that diverse entanglement levels can be engineered to match problem-specific requirements. Our results suggest a practical alternative for near-term distributed quantum applications.
发表机构
- Korea Institute of Science and Technology (KIST)（韩国科学技术院）
- Kyung Hee University（庆熙大学）
- Korea University of Science and Technology（韩国科学技术院）
- Korea Institute for Advanced Study（韩国高等研究院）
- Korea University（高丽大学）
机构由 AI 辅助整理，请以论文原文为准。
