4.4 Article

Langevin noise approach for lossy media and the lossless limit

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Optica Publishing Group
DOI: 10.1364/JOSAB.404295

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  1. German Research Foundation [BU 1803/3-1]
  2. Studienstiftung des deutschen Volkes

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The comparison between the Langevin noise approach and normal-mode quantization for macroscopic electromagnetics in three-dimensional, inhomogeneous environments is discussed, with examples showing that the Langevin noise approach simplifies to the usual cavity mode expansion method in the absence of loss in closed systems.
The Langevin noise approach for quantization of macroscopic electromagnetics for three-dimensional, inhomogeneous environments is compared with normal-mode quantization. Recent works on the applicability of the method are discussed, and several examples are provided showing that for closed systems the Langevin noise approach reduces to the usual cavity mode expansion method when loss is eliminated. (C) 2021 Optical Society of America

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