(Peer-Reviewed) Full-dimensional complex coherence properties tomography for multi-cipher information security
Yonglei Liu 刘永雷 ¹ ², Siting Dai 戴思婷 ¹, Yimeng Zhu 祝艺萌 ¹, Yahong Chen 陈亚红 ¹ ², Peipei Peng 彭培培 ³, Yangjian Cai 蔡阳健 ⁴ ⁵, Fei Wang 王飞 ¹ ²
¹ School of Physical Science and Technology & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
中国 苏州 苏州大学物理科学与技术学院 苏州纳米科技协同创新中心
² Suzhou Key Laboratory of Intelligent Photoelectric Perception, Soochow University, Suzhou 215006, China
中国 苏州 苏州大学 苏州市智能光电感知重点实验室
³ School of Intelligent Manufacturing and Smart Transportation, Suzhou City University, Suzhou 215104, China
中国 苏州 苏州城市学院 智能制造与智慧交通学院
⁴ Shandong Provincial Engineering and Technical Center of Light Manipulation & Shandong Provincial Key Laboratory of Optics and Photonic Devices, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China
中国 济南 山东师范大学物理与电子科学学院 山东省光学与光子器件技术重点实验室 山东省光场调控工程技术中心
⁵ Joint Research Center of Light Manipulation Science and Photonic Integrated Chip of East China Normal University and Shandong Normal University, East China Normal University, Shanghai 200241, China
中国 上海 华东师范大学 华东师范大学-山东师范大学光场调控科学与光子芯片器件联合研究中心
Opto-Electronic Advances, 2025-03-31
Abstract
Optical coherence is a fundamental property of light, playing a key role in understanding interference, propagation, and light-matter interactions for both classical and quantum light. Measuring the coherence properties of an optical field is crucial for a wide range of applications. However, despite many proposed measurement schemes, significant challenges still remain.
In this work, we present a protocol to measure the full-dimensional coherence properties of a partially coherent beam. The method is based on tomographing the complex coherent modes of the partially coherent field within its coherence time. Once the complex coherent modes are reconstructed, all coherence properties including field correlation and its higher-order correlations (e.g., intensity correlation) can be recovered for beams that are either spatially uniformly or non-uniformly correlated.
We perform a proof-of-principle experiment to measure the complex field correlation and intensity correlation of a structured partially coherent beam synthesized by random modes. Additionally, we discuss the application of full-dimensional complex coherence function tomography in coherence-based multi-cipher information security. The robustness of our system in complex environments is also evaluated.
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