Anderson localization of electromagnetic waves in three dimensions
Anderson localization of electromagnetic waves in three dimensions
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DOI：
10.1038/s41567-023-02091-7
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发表时间：
2022-03
期刊：
影响因子：
19.6
通讯作者：
A. Yamilov;S. Skipetrov;Tyler W. Hughes;M. Minkov;Zongfu Yu;H. Cao
中科院分区：
文献类型：
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作者：
A. Yamilov;S. Skipetrov;Tyler W. Hughes;M. Minkov;Zongfu Yu;H. Cao
Anderson局域化是无序系统中扩散波传播的停止。尽管在过去的40 年里进行了广泛的研究，但安德森对光在三维空间的局部化仍然难以捉摸，这导致了光的存在的问题。最近的进展使时域有限差分计算的速度提高了数量级，使我们能够对具有前所未有的维度和折射率差的完全无序的三维系统中的光传输进行蛮力数值模拟。我们给出了矢量电磁波在重叠金属球的随机聚集中的三维数值局域化，这与空气中折射率高达10的介电球没有局域化形成鲜明对比。我们的工作在与Anderson局域化相关的基础研究和利用三维局域光的潜在应用方面开辟了广泛的途径。
Anderson localization is a halt of diffusive wave propagation in disordered systems. Despite extensive studies over the past 40 years, Anderson localization of light in three dimensions has remained elusive, leading to the question of its very existence. Recent advances have enabled finite-difference time-domain calculations to be sped up by orders of magnitude, allowing us to conduct brute-force numerical simulations of light transport in fully disordered three-dimensional systems with unprecedented dimension and refractive index difference. We show numerically three-dimensional localization of vector electromagnetic waves in random aggregates of overlapping metallic spheres, in sharp contrast to the absence of localization for dielectric spheres with a refractive index up to 10 in air. Our work opens a wide range of avenues in both fundamental research related to Anderson localization and potential applications using three-dimensional localized light.