Anderson localization in random structures is an intriguing physical phenomenon, for which experimental verifications are far behind theoretical predictions. We report the first experimental confirmations of photonic band-tail states and a complete transition of Anderson localization. An optically activated photonic crystal alloy platform enables the acquisition of extensive experimental data exclusively on pure eigenstates, revealing direct evidence of band-tail states and Anderson localization transition within the band-tail states. Analyses of both experimental and simulated data lead to a comprehensive picture of photon localization that is highly consistent with theories by Anderson and others. We believe that our results provide a strong experimental foundation upon which both the fundamental understandings and application possibility of Anderson localization can be promoted significantly.

中文翻译：

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在组成混乱的平台中观察到安德森定位和光子带尾状态。

随机结构中的安德森局部化是一个有趣的物理现象，为此，实验验证远远落后于理论预测。我们报告光子带尾状态和安德森本地化的完整过渡的第一个实验确认。光激活的光子晶体合金平台能够仅获取纯本征态的大量实验数据，从而揭示了带尾态和带尾态内安德森定位转变的直接证据。通过对实验数据和模拟数据的分析，可以得出与安德森等人的理论高度一致的光子定位的全面情况。