Real-time vacuum-state quantum random number generator on a chip
- URL: http://arxiv.org/abs/2509.13105v1
- Date: Tue, 16 Sep 2025 14:04:56 GMT
- Title: Real-time vacuum-state quantum random number generator on a chip
- Authors: Guan-Ru Qiao, Bing Bai, Zi-Xuan Weng, Han-Shen Chen, Wei Zheng, Zhi-Yuan Zheng, You-Qi Nie, Jun Zhang, Jian-Wei Pan,
- Abstract summary: Miniaturization of quantum random number generators (QRNGs) is crucial for a wide range of communication and cryptography applications.<n>Here, we report a fully functional QRNG chip based on vacuum-state fluctuations, with dimensions of 16.6 mm x 7.8 mm.<n>According to the characterization results, the QRNG chip achieves a constant real-time output rate of 5.2 Mbps across the industrial temperature range of -40degC to 85degC.
- Score: 10.673162814530992
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Quantum random number generators (QRNGs) produce true random numbers, which are guaranteed by the fundamental principles of quantum physics. Miniaturization of QRNGs is crucial for a wide range of communication and cryptography applications. Here, we first report a fully functional QRNG chip based on vacuum-state fluctuations, with dimensions of 16.6 mm x 7.8 mm. The quantum entropy source, which is achieved via hybrid photonic integration with a SiO2 waveguide, generates raw quantum random numbers. The hybrid photonic and electrical components are assembled into a compact ceramic package using system-in-package technology. A microcontroller unit acquires the raw data and outputs the processed quantum random numbers via a serial peripheral interface. According to the characterization results, the QRNG chip achieves a constant real-time output rate of 5.2 Mbps across the industrial temperature range of -40{\deg}C to 85{\deg}C, making it suitable for practical applications.
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