Compact quantum random number generator based on a laser diode and silicon photonics integrated hybrid chip

• URL: http://arxiv.org/abs/2401.11099v1
• Date: Sat, 20 Jan 2024 03:28:19 GMT
• Title: Compact quantum random number generator based on a laser diode and silicon photonics integrated hybrid chip
• Authors: Xuyang Wang, Tao Zheng, Yanxiang Jia, Qianru Zhao, Yu Zhang, Yuqi Shi, Ning Wang, Zhenguo Lu, Jun Zou and Yongmin Li
• Abstract summary: A compact and low-power-consumption quantum random number generator is proposed and verified experimentally. The hybrid chip's size is 8.8*2.6*1 mm3, and the power of entropy source is 80 mW. The proposed QRNG has the potential for use in scenarios of moderate MHz random number generation speed, with low power, small volume, and low cost prioritized.
• Score: 11.872140326651204
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: In this study, a compact and low-power-consumption quantum random number generator (QRNG) based on a laser diode and silicon photonics integrated hybrid chip is proposed and verified experimentally. The hybrid chip's size is 8.8*2.6*1 mm3, and the power of entropy source is 80 mW. A common mode rejection ratio greater than 40 dB was achieved using an optimized 1*2 multimode interferometer structure. A method for optimizing the quantum-to-classical noise ratio is presented. A quantum-to-classical noise ratio of approximately 9 dB was achieved when the photoelectron current is 1 microampere using a balance homodyne detector with a high dark current GeSi photodiode. The proposed QRNG has the potential for use in scenarios of moderate MHz random number generation speed, with low power, small volume, and low cost prioritized.

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