一种基于激光相位噪声的光量子随机数产生装置及方法

By simplifying the optical circuit structure of the photonic quantum random number generator and omitting the phase stabilization device and feedback algorithm, the problem of high hardware complexity in the existing technology is solved, the stability and robustness of the system are improved, and miniaturization and integration are promoted.

CN120994163BActive Publication Date: 2026-07-17NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NO 30 INST OF CHINA ELECTRONIC TECH GRP CORP
Filing Date
2025-08-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing quantum random number generator schemes based on laser phase noise require complex phase stabilization devices and feedback algorithms, resulting in high hardware implementation complexity and hindering practical application.

Method used

A photonic random number generator based on laser phase noise is employed. By combining a light source module, a detection module, and a data sampling and post-processing module, the laser beam is split and interfered using first and second couplers. A random number sequence is generated using a photodetector and data processing, omitting complex phase stabilization devices and feedback algorithms.

Benefits of technology

It simplifies the optical circuit structure of the system, reduces system complexity, facilitates the miniaturization and integration of the QRNG scheme, and improves the stability and robustness of the system.

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Abstract

本发明公开了一种基于激光相位噪声的光量子随机数产生装置及方法,属于量子随机数发生器领域,所述装置包括:光源模块、探测模块、数据采样及后处理模块,光源模块、探测模块、数据采样及后处理模块依次连接;光源模块包括激光器Laser、第一耦合器BS1、延时光纤和第二耦合器BS2;探测模块包括光电探测器PD1和光电探测器PD2;或光源模块包括激光器Laser、环形器、第三耦合器BS、延时光纤和法拉第旋转镜;探测模块包括光电探测器PD1和光电探测器PD2。本发明解决了现有相位噪声QRNG方案需要稳相装置和复杂反馈算法的问题,无需复杂的反馈算法和装置进行稳相,具有实现简单、成本低等优势。
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