Orthogonal Thermal Noise and Transmission Signals: A New Coherent Perfect Absorption’s Feature,Physical Review Letters

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Orthogonal Thermal Noise and Transmission Signals: A New Coherent Perfect Absorption’s Feature
Physical Review Letters ( IF 8.1 ) Pub Date : 2024-09-06 , DOI: 10.1103/physrevlett.133.103801
Douglas Oña ₁ , Angel Ortega-Gomez ₁ , Osmery Hernández ₁ , Iñigo Liberal ₁

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Coherent perfect absorption (CPA) is an interference process associated with the zeros of the scattering matrix of interest for optical computing, data processing, and sensing. However, the noise properties of CPA remain relatively unexplored. Here, we demonstrate that CPA thermal noise signals exhibit a unique property: they are orthogonal to the signals transmitted through the network. In turn, such property enables a variety of thermal noise management effects, such as the physical separability of thermal noise and transmitted signals, and “externally lossless” networks that internally host radiative heat transfer processes. We believe that our results provide a new perspective on the many CPA technologies currently under development.

中文翻译：

正交热噪声和传输信号：一种新的相干完美吸收特征

相干完美吸收 (CPA) 是一种与光学计算、数据处理和传感感兴趣的散射矩阵的零点相关的干涉过程。然而，CPA 的噪声特性仍然相对未被探索。在这里，我们证明 CPA 热噪声信号具有独特的属性：它们与通过网络传输的信号正交。反过来，这种特性可以实现各种热噪声管理效果，例如热噪声和传输信号的物理可分离性，以及内部托管辐射传热过程的“外部无损”网络。我们相信，我们的结果为目前正在开发的许多 CPA 技术提供了新的视角。

更新日期：2024-09-06

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