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Customizing the Angular Memory Effect for Scattering Media
Physical Review X ( IF 12.5 ) Pub Date : 2021-07-15 , DOI: 10.1103/physrevx.11.031010
Hasan Yılmaz , Matthias Kühmayer , Chia Wei Hsu , Stefan Rotter , Hui Cao

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 wave front shaping. This work reveals the power of wave front shaping in creating any desired memory for applications of classical and quantum waves in complex systems.

中文翻译:

自定义散射媒体的角度记忆效应

无序系统中的记忆效应是一种关键的物理现象,已被用于光学成像、计量和通过不透明介质的通信。在传统的记忆效应下,当入射光束稍微倾斜时,透射图案会向同一方向倾斜。然而,“记忆”受限于其角度范围和倾斜方向。在这里,我们提出了一种通过引入角度记忆算子来定制记忆效应的通用方法。它的本征态对于倾斜角和方向具有完美的相关性,可以为入射波和透射波分别任意选择,并且可以通过波前整形轻松实现。这项工作揭示了波前整形在为复杂系统中的经典波和量子波应用创建任何所需记忆方面的力量。
更新日期:2021-07-15
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