Wave propagation through disordered media without backscattering and intensity variations

作者：Makris Konstantinos G^*; Brandstoetter Andre; Ambichl Philipp; Musslimani Ziad H; Rotter Stefan

来源：Light:Science & Applications , 2017, 6(9): e17035.

DOI：10.1038/lsa.2017.35

• Anderson localisation
• complex media
• non-Hermitian physics
• scattering

A fundamental manifestation of wave scattering in a disordered medium is the highly complex intensity pattern the waves acquire due to multi-path interference. Here we show that these intensity variations can be entirely suppressed by adding disorder-specific gain and loss components to the medium. The resulting constant-intensity waves in such non-Hermitian scattering landscapes are free of any backscattering and feature perfect transmission through the disorder. An experimental demonstration of these unique wave states is envisioned based on spatially modulated pump beams that can flexibly control the gain and loss components in an active medium.

• 出版日期2017-9-8