发表机构
Aston Institute of Photonic Technologies, Aston University; Novosibirsk State University（阿斯顿大学光子技术研究所; 新西伯利亚国立大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出并数值验证了二次非线性谐振器中脉冲串的移位寄存器同步机制，通过参量能量交换克服群速度失配，实现确定性脉冲移位，为多色频率梳和超快光子信息处理提供新途径。
AI 中文摘要
非线性波的自组织支撑着从流体动力学图案形成到光学频率梳产生等一系列现象。我们引入并数值演示了二次非线性谐振器中脉冲串的移位寄存器同步机制。通过连续的参量能量交换，同步态在显著的群速度失配下仍能持续存在，导致每个腔往返后产生确定性的离散脉冲移位。非线性参量相互作用改变了有效走离，使脉冲串能够满足移位寄存器同步条件。所提出的机制揭示了二次谐振器中一个先前未探索的同步机制，并为多色频率梳、光学存储器和超快光子信息处理提供了途径。
英文摘要
Self-organization of nonlinear waves underpins phenomena ranging from hydrodynamic pattern formation to optical frequency-comb generation. We introduce and numerically demonstrate a shift-register synchronization mechanism for pulse trains in quadratic nonlinear resonators. The synchronized state persists despite substantial group-velocity mismatch through continuous parametric energy exchange, resulting in deterministic discrete pulse shifts after each cavity round trip. Nonlinear parametric interaction modifies the effective walk-off, allowing the pulse trains to satisfy the shift-register synchronization conditions. The proposed mechanism reveals a previously unexplored synchronization regime in quadratic resonators and provides a route toward multicolour frequency combs, optical memories, and ultrafast photonic information processing.
