CBQD - Chip-based quantum random device

Random numbers are of enormous importance in IT security, as they are used for cryptographic procedures such as key generation and thus ensuring the security of data in terms of confidentiality, integrity, and authenticity. In the BMBF-funded CBQD project, a compact chip is being developed that generates random numbers at high speed based on quantum photonic effects and meets the requirements of the Common Criteria for the security of IT products. The chip shall be the basis for numerous communication systems for authorities, banks, critical infrastructure, and the Internet of Things.

Project goals

A compact QRNG (Quantum Random Number Generator) chip with a noise bit rate of 5 Gbit/s is to be developed in the project. The noise bit rate is a decisive factor for the speed of random number generation. The aim is to combine high speed with a compact design and at the same time meet the requirements of Common Criteria AIS 20/31 PTG.3, a standard for security requirements for IT products from the German Federal Office for Information Security (BSI). To implement the QRNG chip, modern silicon-germanium technologies for the development of electrophotonic integrated circuits (EPIC) are used to develop a fully integrated solution with laser source, waveguide structures, photodiodes and analog/digital signal processing. The QRNG solution will then be tested in two Quantum Key Distribution (QKD) applications.

The interdisciplinary project team brings extensive expertise from quantum theory, security proofs, security-by-design experience for random number generators, silicon photonics up to QKD systems and their integration into applications. Fraunhofer IPMS is responsible for project coordination and QNRG chip integration.