Quantum random number generation (QRNG) leveraging intrinsic quantum uncertainty has attracted significant interest in the field of integrated photonic architecture, with applications in quantum cryptography, tests of quantum nonlocality, and beyond. The demand for compact, low-energy consumption, robust, fast, and cost-effective QRNGs integrated into photonic chips is highlighted, whereas most previous works focused on bulk optics. Here, based on the metalens array entangled source, we experimentally realized a miniaturized, high-dimensional quantum random number generator via a meta-device without post-randomness extraction. Specifically, the device has a high-density output with 100 channels per square millimeter. This chip-scale quantum randomness source can obtain random number arrays without post-randomness extraction and enable compact integration for quantum applications needing secure keys or randomness. Our approach demonstrates potential in secure key generation and randomness for quantum applications.

中文翻译：

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量子随机数超透镜阵列


利用内在量子不确定性的量子随机数生成（QRNG）引起了集成光子架构领域的极大兴趣，其在量子密码学、量子非局域性测试等领域的应用。对集成到光子芯片中的紧凑、低能耗、稳健、快速且经济高效的 QRNG 的需求凸显，而之前的大多数工作都集中在体光学上。在这里，基于超透镜阵列纠缠源，我们通过元器件实验实现了一种小型化的高维量子随机数发生器，无需进行后随机性提取。具体来说，该器件具有每平方毫米 100 个通道的高密度输出。这种芯片级量子随机源无需进行后随机性提取即可获得随机数数组，并为需要安全密钥或随机性的量子应用提供紧凑集成。我们的方法展示了量子应用的安全密钥生成和随机性的潜力。