Real-Time Seedless Post-Processing for Quantum Random Number Generators

• URL: http://arxiv.org/abs/2402.14607v1
• Date: Mon, 29 Jan 2024 03:41:07 GMT
• Title: Real-Time Seedless Post-Processing for Quantum Random Number Generators
• Authors: Qian Li and Hongyi Zhou
• Abstract summary: We introduce a real-time two-source quantum randomness extractor against quantum side information. Our extractor is tailored for forward block sources, a novel category of min-entropy sources. Applying our extractors to the raw data of one of the most commonly used quantum random number generators, we achieve a simulated extraction speed as high as 64 Gbps.
• Score: 3.9265817364556503
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum-proof randomness extraction is essential for handling quantum side information possessed by a quantum adversary, which is widely applied in various quantum cryptography tasks. In this study, we introduce a real-time two-source quantum randomness extractor against quantum side information. Our extractor is tailored for forward block sources, a novel category of min-entropy sources introduced in this work. These sources retain the flexibility to accommodate a broad range of quantum random number generators. Our online algorithms demonstrate the extraction of a constant fraction of min-entropy from two infinitely long independent forward block sources. Moreover, our extractor is inherently block-wise parallelizable, presenting a practical and efficient solution for the timely extraction of high-quality randomness. Applying our extractors to the raw data of one of the most commonly used quantum random number generators, we achieve a simulated extraction speed as high as 64 Gbps.

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