发表机构
Aalto University; Hangzhou Institute of Advanced Studies, University of Chinese Academy of Science; Shanghai Jiao Tong University; Zhejiang University; Shanghai Institute of Technical Physics, Chinese Academy of Sciences; University of Cambridge; Institute of Physics, Chinese Academy of Sciences（阿尔托大学; 中国科学院大学杭州高等研究院; 上海交通大学; 浙江大学; 中国科学院上海技术物理研究所; 剑桥大学; 中国科学院物理研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过对称性工程范德华异质结实现超紧凑多维光电探测器，可同时完成宽带偏振与光谱分辨探测，性能优于单像素器件，为相关领域多维探测器阵列奠定基础。
AI 中文摘要
小型化多维光探测技术可在超紧凑结构中实现全斯托克斯偏振测量与光谱分析，因能在便携平台上捕获光的全部属性而受到日益关注。尽管偏振与光谱探测的小型化方案已取得显著进展，但同时实现高维光探测仍是限制其完全集成发展的突出挑战。本研究通过打破对称性工程范德华异质结的旋转与反转对称性，成功制备超紧凑多维光电探测器。双重对称性破缺产生非平凡量子几何与拓扑特征，使其可同时实现宽带偏振分辨与光谱分辨光探测，而此前基于范德华材料的器件仅能探测其中一种模态。该器件有效面积仅10微米×10微米，重建全斯托克斯偏振的总体均方根误差低于0.05，可分辨间隔0.4纳米的光谱峰，这些性能是单像素探测器此前未达到的。通过在单个电可调结中集成高保真偏振测量与亚纳米级光谱分析，本研究消除了级联探测架构的需求，为集成光子学、量子信息处理及精密成像领域的多维探测器阵列奠定了基础。
英文摘要
Miniaturised multidimensional light detection, encompassing full-Stokes polarimetry and spectroscopy in ultracompact footprints, is attracting growing interest for its potential to capture a comprehensive set of light properties in portable platforms. Although significant progress has been made in miniaturised schemes for independent polarisation and spectral detection, achieving simultaneous high-dimensional light detection remains an outstanding challenge that limits their development toward full integration. We overcome this limitation by breaking the rotational and inversion symmetries in a symmetry-engineered van der Waals heterojunction to realise an ultracompact multidimensional photodetector. The dual symmetry breaking gives rise to non-trivial quantum geometric and topological features, enabling simultaneous broadband polarisation- and spectrum-resolved light detection, in contrast to previous van der Waals material-based devices, which could detect only one of these modalities. Our device, with an effective area of only 10 micron x 10 micron, reconstructs full-Stokes polarisation with overall root-mean-square errors below 0.05 and resolves spectral peaks separated by 0.4 nm, capabilities not previously achieved in single-pixel detectors. By unifying high-fidelity polarimetry and sub-nanometre spectroscopy in a single electrically tunable junction, our work eliminates the need for cascaded detection architectures and establishes a foundation for multidimensional detector arrays for integrated photonics, quantum information processing, and precision imaging.
Comments4 figures
