Nonuniversal Intensity Correlations in a Two-Dimensional Anderson-Localizing Random Medium
Nonuniversal Intensity Correlations in a Two-Dimensional Anderson-Localizing Random Medium
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DOI：
10.1103/physrevlett.109.253902
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发表时间：
2012-12-19
影响因子：
8.6
通讯作者：
Lodahl, Peter
中科院分区：
文献类型：
--
作者：
Garcia, Pedro David;Stobbe, Soren;Lodahl, Peter
复杂的介电介质通常看起来不透明，因为穿过它们的光被多次散射。虽然光散射是一个随机过程，但通过介质的不同路径可以是关于介质的相关编码信息。在这里，我们提出了非普适强度相关性的光谱测量时出现的嵌入量子发射器内部的无序光子晶体，发现安德森本地化光。发射器原位探测介质的微观细节，并将这种近场特性印在远场相关性上。我们的发现为量子电动力学和能量收集提供了增强光-物质相互作用的新方法，并可能在生物光子学的亚波长扩散波光谱学中找到应用。DOI：10.1103/PhysRevLett.109.253902
Complex dielectric media often appear opaque because light traveling through them is scattered multiple times. Although the light scattering is a random process, different paths through the medium can be correlated encoding information about the medium. Here, we present spectroscopic measurements of nonuniversal intensity correlations that emerge when embedding quantum emitters inside a disordered photonic crystal that is found to Anderson-localize light. The emitters probe in situ the microscopic details of the medium, and imprint such near-field properties onto the far-field correlations. Our findings provide new ways of enhancing light-matter interaction for quantum electrodynamics and energy harvesting, and may find applications in subwavelength diffuse-wave spectroscopy for biophotonics. DOI:10.1103/PhysRevLett.109.253902