论文标题
自定义散射介质的角度记忆效果
Customizing the angular memory effect for scattering media
论文作者
论文摘要
无序系统中的记忆效应是通过不透明媒体用于光学成像，计量和通信的关键物理现象。在常规记忆效果下，当入射光束稍微倾斜时，沿相同方向传输的图案倾斜。但是，“记忆”在其角度范围和倾斜方向上受到限制。在这里，我们提出了一种通用方法，可以通过引入角度存储器操作员来自定义内存效果。它的本征态具有与倾斜角度和方向的完美相关性，这些角度和方向可以被任意选择用于事件和传输波，并且可以通过波前形状轻易实现。这项工作揭示了波前塑形在为复杂系统中经典和量子波的应用创建所需的任何内存方面的力量。
The memory effect in disordered systems is a key physical phenomenon that has been employed for optical imaging, metrology, and communication through opaque media. Under the conventional memory effect, when the incident beam is tilted slightly, the transmitted pattern tilts in the same direction. However, the "memory" is limited in its angular range and tilt direction. Here, we present a general approach to customize the memory effect by introducing an angular memory operator. Its eigenstates possess perfect correlation for tilt angles and directions that can be arbitrarily chosen separately for the incident and transmitted waves, and can be readily realized with wavefront shaping. This work reveals the power of wavefront shaping in creating any desired memory for applications of classical and quantum waves in complex systems.
