论文标题
通过光子碰撞在时间界面处的光子碰撞控制宽带连贯的波浪
Broadband Coherent Wave Control Through Photonic Collisions at Time Interfaces
论文作者
论文摘要
一致的波控制利用了撞击系统上的多个波的干扰，以根据其相对相和振幅抑制或增强传出信号。这个过程固有地需要非热性，以便在波浪之间进行能量交流和空间界面，以量身定制它们的散射。在这里，我们基于时间间隙探索这种现象的时间类似物，这些时间间隙支持类似于机械碰撞的光子的瞬时非热散射事件。基于这种机制，我们证明了具有相位可调的弹性特征的超宽带时间相干波控制和光子碰撞，并通过适当地调整反向传播信号的幅度和相位来擦除，增强和重塑任意脉冲。我们的发现为有效雕刻宽带灯光雕刻而不需要空间边界的途径提供了一条途径，在超快和低能平台内。
Coherent wave control exploits the interference among multiple waves impinging on a system to suppress or enhance outgoing signals based on their relative phase and amplitude. This process inherently requires non-Hermiticity, in order to enable energy exchanges among the waves, and spatial interfaces in order to tailor their scattering. Here we explore the temporal analogue of this phenomenon, based on time-interfaces that support instantaneous non-Hermitian scattering events for photons analogous to mechanical collisions. Based on this mechanism, we demonstrate ultra-broadband temporal coherent wave control and photonic collisions with phase-tunable elastic features, and apply them to erase, enhance and reshape arbitrary pulses by suitably tailoring the amplitude and phase of counterpropagating signals. Our findings provide a pathway to effectively sculpt broadband light with light without requiring spatial boundaries, within an ultrafast and low-energy platform.
