AI 中文总结
该研究利用量子纠缠和后选控制操作，通过改变后选角色，从相关成对双态矢量中观测反常互补弱值，扩展了时间对称量子结构的操作可达性，为量子信息处理中时间对称应用探索开辟新途径。
AI 中文摘要
弱值（WVs）源于量子力学时间对称表述中的弱测量，此时系统有预选和后选。位于可观测量本征值谱之外的反常WVs具有基础和实际意义。但其产生通常依赖近正交预选和后选，成功概率极低且限于单一后选结果。为克服这些限制，我们利用量子纠缠和后选控制操作生成相关成对双态矢量。通过将后选从被动滤波变为主动操控，能观测与互斥后选分支相关的反常互补WVs。结果扩展了与双态矢量形式相关的时间对称量子结构的操作可达性，为探索时间对称在量子信息处理中的应用开辟新途径。
英文摘要
Weak values (WVs) arise from weak measurements performed within a time-symmetric formulation of quantum mechanics, where a system is both pre- and post-selected. Anomalous WVs that lie far outside the eigenvalue spectrum of the observable hold both fundamental and practical significance. However, their generation typically relies on near-orthogonal pre- and post-selection, which confines them to a single post-selection outcome with extremely low success probability. This constraint limits experimental accessibility and hinders the full exploitation of time symmetry. To overcome these limitations, we utilize quantum entanglement and post-selection-controlled operations to generate correlated pairwise two-state vectors. By changing the role of post-selection from passive filtering to active engineering, this approach enables the observation of anomalous complementary WVs associated with mutually exclusive post-selection branches. Our results extend the operational accessibility of time-symmetric quantum structures associated with the two-state vector formalism, and open new avenues for exploring the applications of time symmetry in quantum information processing.
Comments12 pages, 7 figures
