Physical layer security is a field of study that continues to gain importance over time. It encompasses a range of algorithms applicable to various aspects of communication systems. While research in the physical layer has predominantly focused on secrecy capacity, which involves logical and digital manipulations to achieve secure communication, there is limited exploration of directly manipulating electromagnetic fields to enhance security against eavesdroppers. In this paper, we propose a novel system that utilizes the Mueller calculation to establish a theoretical framework for manipulating electromagnetic fields in the context of physical layer security. We develop fundamental expressions and introduce new metrics to analyze the system's performance analytically. Additionally, we present three techniques that leverage polarization to enhance physical layer security.

翻译：物理层安全是一个日益重要的研究领域，涵盖了一系列适用于通信系统各环节的算法。尽管物理层研究主要集中在保密容量方面，即通过逻辑和数字操作实现安全通信，但直接操纵电磁场以增强对抗窃听者的安全性方面仍鲜有探索。本文提出一种新型系统，利用穆勒计算建立物理层安全背景下电磁场操纵的理论框架。我们推导了基本表达式，并引入新指标对系统性能进行解析分析。此外，还提出了三种利用偏振增强物理层安全的技术手段。