Distributed variational quantum computing with deterministic entanglement tuning
Ilhwan Kim Yong-Su Kim Kwang Jo Lee Hyukjoon Kwon Yosep Kim Hyang-Tag Lim
作者信息
Abstract
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.引用本文复制引用
Ilhwan Kim,Yong-Su Kim,Kwang Jo Lee,Hyukjoon Kwon,Yosep Kim,Hyang-Tag Lim.Distributed variational quantum computing with deterministic entanglement tuning[EB/OL].(2026-09-10)[2026-09-21].https://arxiv.org/abs/2609.10932.学科分类
电子技术概论
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