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Here, we introduce a framework leveraging a free-space optical system based on the 4f configuration, inspired by the SWIFFT algorithms, designed to significantly enhance the processing of encrypted data using analog optical AI accelerators. This innovative approach aims to outperform traditional electronic machine learning accelerators by offering superior processing speeds and heightened data security. The adoption of the 4f-based optical setup is pivotal, harnessing the natural Fourier transform capabilities of light to efficiently implement complex mathematical operations inherent in hashing and compression algorithms. This alignment with the Fourier transform properties optimizes the system’s computational throughput and energy efficiency, far surpassing conventional electronic processing methods. Furthermore, the utilization of analog optical AI accelerators within this 4f configuration underscores a groundbreaking advancement in processing encrypted data securely and swiftly. The 4f system facilitates parallel processing and high-speed data transmission, characteristics that are instrumental in reducing latency and enhancing the security measures of data processing.
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