Circularly polarized light (CPL) detection is essential in diverse fields, including drug screening, quantum optics, and optical communications. Although chiral plasmonic metastructures and organic chiral molecules have been proposed to address the challenges of miniaturization and integration for conventional optical systems by reducing the reliance on multiple optical elements, they also suffer from sophisticated fabrication processes, spectral range limitations, and compatibility challenges. Here, we demonstrate a temperature-tunable CPL photodetector using a nodal-line semimetal ZrSiSe without any external chiral metastructures or organic molecules, achieving a responsivity of 39.87 μA/W. Moreover, we analyze the origin of the inherent helicity-dependent photoresponse arising from the nontrivial local Berry curvature of the quantum wave function. The induced photocurrent shifts as the temperature varies, which can be attributed to the coeffect of temperature-induced Lifshitz transitions and changes in thermal gradients. This research introduces a photonic platform for miniaturized and integrated CPL photodetection.

中文翻译：

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基于节线半金属 ZrSiSe 的温度可调谐圆偏振光探测器


圆偏振光 (CPL) 检测在药物筛选、量子光学和光通信等多个领域都至关重要。尽管已经提出手性等离子体超结构和有机手性分子通过减少对多个光学元件的依赖来解决传统光学系统小型化和集成的挑战，但它们也面临复杂的制造工艺、光谱范围限制和兼容性挑战。在这里，我们展示了一种温度可调的 CPL 光电探测器，使用节点线半金属 ZrSiSe，无需任何外部手性超结构或有机分子，实现了 39.87 μA/W 的响应度。此外，我们分析了由量子波函数的非平凡局部贝里曲率引起的固有的螺旋性相关光响应的起源。感应光电流随着温度的变化而变化，这可以归因于温度引起的利夫席兹跃迁和热梯度变化的共同效应。本研究介绍了一种用于小型化集成 CPL 光电检测的光子平台。