发表机构
College of Physics and Materials Science, Tianjin Normal University; Interdisciplinary Center, Tianjin Normal University（天津师范大学物理与材料科学学院; 天津师范大学交叉学科中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出利用远程磁通重聚焦紧凑态量子转移中的非adiabatic偏移，在不改变转移态的前提下，通过干涉抑制端点误差，实现高保真逻辑转移。
AI 中文摘要
嵌入传播带中的紧凑态可以携带量子信息，但有限时间转移可能激发其子空间之外的模式。我们证明，远程磁通可以在不改变转移态或运动诱导耦合（该耦合导致离开子空间）的情况下重聚焦这些振幅。在谐振器环中，这种分离是精确的，因为承载磁通的键的两个端点都是每个紧凑转移态的节点。对于相同的脉冲，零磁通和重聚焦磁通都会产生显著的偏移，但只有后者能实现近乎完整的逻辑转移。与不同绕转相关的矩阵振幅之间的干涉抑制了端点误差。在匹配的控制约束下，数值优化在重聚焦磁通处获得更高的最坏输入保真度，为通过相干返回实现精确转移提供了途径。
英文摘要
Compact states embedded in a propagating band can carry quantum information, but finite-time transfer can populate modes outside their subspace. We show that a remote flux can refocus this amplitude without changing the transfer states or the motion-induced coupling out of their subspace. In a resonator ring, this separation is exact because both endpoints of the flux-bearing bond are nodes of every compact transfer state. For the same pulse, zero and refocusing flux both produce substantial excursions, but only the latter yields near-complete logical transfer. Interference between matrix amplitudes associated with different windings suppresses the endpoint error. Under matched control bounds, numerical optimization yields higher worst-input fidelity at the refocusing flux, providing a route to accurate transfer through coherent return.
Comments16 pages, 6 figures
