The photonic spin Hall effect (PSHE), featured by a spin-dependent shift driven by its polarization handedness, is proposed to facilitate the applications in precision metrology and quantum information processing. Here, due to the magnetoelectric coupling of the chirality, the PSHE is accompanied with Goos–Hänchen and Imbert–Fedorov effects. Taking advantage of this superiority, the transverse shift (TS) and longitudinal shift (LS) can be applied simultaneously. Rearranging the PT-symmetric scattering matrix, the responsive PSHE near the exceptional points and their basic physical mechanisms are discussed in detail in the case of complex chirality κ. Re[κ] and Im[κ] regulated the rich (at multi-angle), gaint (reach upper limit) and tunable (magnitude and direction) TS and LS, respectively. Based on the chirality-modulated PSHE, the novel applications in binary code conversion and barcode encryption are proposed systematically. By incorporating the quantum weak measurement technology, our applications provide new mechanisms to realize optoelectronic communication.

中文翻译：

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PT对称中的手性调制光子自旋霍尔效应

光子自旋霍尔效应 (PSHE) 的特点是由其极化手性驱动的自旋相关偏移，旨在促进在精密计量和量子信息处理中的应用。在这里，由于手性的磁电耦合，PSHE 伴随着 Goos-Hänchen 和 Imbert-Fedorov 效应。利用这一优势，可以同时应用横向偏移（TS）和纵向偏移（LS）。重新排列PT对称散射矩阵，在复杂手性情况下详细讨论异常点附近的响应PSHE及其基本物理机制κ. 回覆[κ]和我[κ] 分别调节富（多角度）、增益（达到上限）和可调（幅度和方向）TS 和 LS。基于手性调制的PSHE，系统地提出了在二进制代码转换和条码加密方面的新应用。通过结合量子弱测量技术，我们的应用为实现光电通信提供了新的机制。