Abstract Physical unclonable function (PUF) has emerged as a promising and important security primitive for use in modern systems and devices, due to their increasingly embedded, distributed, unsupervised, and physically exposed nature. However, optical PUFs based on speckle patterns, chaos, or ‘strong’ disorder are so far notoriously sensitive to probing and/or environmental variations. Here we report an optical PUF designed for robustness against fluctuations in optical angular/spatial alignment, polarization, and temperature. This is achieved using an integrated quasicrystal interferometer (QCI) which sensitively probes disorder while: (1) ensuring all modes are engineered to exhibit approximately the same confinement factor in the predominant thermo-optic medium (e. g. silicon), and (2) constraining the transverse spatial-mode and polarization degrees of freedom. This demonstration unveils a new means for amplifying and harnessing the effects of ‘weak’ disorder in photonics and is an important and enabling step toward new generations of optics-enabled hardware and information security devices.

中文翻译：

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使用无序光子集成电路的鲁棒光学物理不可克隆功能

摘要 物理不可克隆函数 (PUF) 由于其日益嵌入、分布式、无监督和物理暴露的性质，已成为用于现代系统和设备的有前途且重要的安全原语。然而，迄今为止，基于斑点图案、混沌或“强”无序的光学 PUF 对探测和/或环境变化非常敏感。在这里，我们报告了一种光学 PUF，其设计目的是针对光学角度/空间对准、偏振和温度的波动具有鲁棒性。这是使用集成准晶干涉仪 (QCI) 实现的，该干涉仪可以灵敏地探测无序，同时：(1) 确保所有模式都设计为在主要热光介质（例如硅）中表现出大致相同的限制因子，(2) 约束横向空间模式和偏振自由度。该演示揭示了一种放大和利用光子学中“弱”无序影响的新方法，是迈向新一代支持光学的硬件和信息安全设备的重要且有利的一步。