Integrated quantum random number generator

By vertically overlapping photon sources and single-photon detectors in a semiconductor substrate, and combining Zener-avLED and deep SPAD, the problems of large area and vulnerability of iQRNG are solved, and a compact and efficient quantum random number generator design is realized.

CN122138920APending Publication Date: 2026-06-02ELMOS SEMICON AG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ELMOS SEMICON AG
Filing Date
2024-09-19
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing integrated quantum random number generators (iQRNGs) suffer from structural problems such as large area consumption, susceptibility to external attacks, and low efficiency, making it difficult to achieve a compact and secure design, especially in hybrid integrated systems.

Method used

By adopting a vertically overlapping layout, the photon source and single-photon detector are arranged vertically overlapping in the semiconductor substrate. Zener-avLED is used as the photon source and deep SPAD is used as the detector. Combined with BCD technology, the iQRNG is highly efficient, compact and attack-resistant.

Benefits of technology

It achieves area minimization, improves security and efficiency, reduces the possibility of external influence and attacks, and is suitable for a wide range of semiconductor structured technology platforms.

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Abstract

This invention relates to an integrated quantum random number generator (iQRNG), particularly a photonic QRNG monolithically constructed in a shared semiconductor substrate within the same material system in a scalable and fully integrated manner. It comprises a photon source and a detector for single photons directly coupled to the source, implemented in a particularly compact and attack-resistant manner on a semiconductor-structured technology platform open for a wide range of applications. The subject of this invention is an integrated quantum random number generator iQRNG (200) comprising a photon source (120) and a single-photon detector (130), wherein the photon source (120) and the single-photon detector (130) are arranged vertically overlapping each other in a shared substrate (110) made of semiconductor material. Furthermore, this invention also relates to an integrated electronic circuit (500) comprising at least one iQRNG (200) according to the invention.
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