标题： 用于通用线性光学的混合时空架构 显示英文标题

标题： Hybrid spatiotemporal architectures for universal linear optics

摘要： 我们提出了两种混合线性光学架构，它们同时利用光的空间和时间自由度来实现任意离散的酉变换。 我们的架构结合了线性光学空间实现（即低损耗和并行操作）的优点与时间实现（即资源需求适中且可访问潜在无界的变换）的优点。 我们通过设计并应用将大尺度离散酉变换分解为小尺度变换的方法得到了这些架构，并且我们预计这种分解方法在空间-时间线性光学之外也有广泛的实用性。 我们证明，混合架构相对于仅空间或仅时间的架构具有重要的优势。 显示英文摘要

摘要： We present two hybrid linear-optical architectures that simultaneously exploit spatial and temporal degrees of freedom of light to effect arbitrary discrete unitary transformations. Our architectures combine the benefits of spatial implementations of linear optics, namely low loss and parallel operation, with those of temporal implementations, namely modest resource requirements and access to transformations of potentially unbounded size. We arrive at our architectures by devising and employing decompositions of large discrete unitary transformations into smaller ones, decompositions we expect to have broad utility beyond spatio-temporal linear optics. We show that hybrid architectures promise important advantages over both spatial-only and temporal-only architectures.