发表机构
Imperial College London（帝国理工学院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究提出双时调制概念，实现无额外延迟的实时时间模拟计算，单次通过求解非局部积分方程，有望应用于超快光信息处理。
AI 中文摘要
光学计算的核心目标是在光传播的时间尺度上完成计算。然而，许多模拟光子求解器需要反馈、存储或场积累才能得到结果，这会引入额外延迟，限制实时操作。本文提出时间模拟计算的双时调制概念，即材料响应沿两个时间方向独立调制，这使得仅在时间上分离的波形相同副本可被同一介质转换为完全不同的目标输出，且全部在单个空间通道内完成。随后，利用双时调制单次通过求解非局部积分方程，全波模拟显示编码输入在编程交互长度内直接演化为解，因此计算除光传输外无固有解形成延迟。这些结果使紧凑、可编程、实时的模拟计算有望用于超快光信息处理。
英文摘要
A central goal of optical computing is to perform calculations on the timescale of light propagation. Yet many analog photonic solvers require feedback, storage or field build-up before the answer becomes available, introducing additional latency that limits real-time operation. Here we introduce the concept of two-time modulation for temporal analog computing, in which the material response is independently modulated along two temporal directions, allowing the computational operator to be constructed continuously as the waveform propagates. The solution can therefore form during optical transit, without an additional solution-formation timescale. This form of temporal control allows identical copies of a waveform separated only in time to reach entirely different target outputs within a single spatial channel, and enables nonlocal integral-equation solving in a single passage. The resulting framework brings compact, programmable, real-time analog computation within reach for ultrafast optical information processing.
Comments20 pages, 4 figures
