GeBaseQ

A key challenge in realizing quantum computers is the fabrication of their fundamental building blocks, known as quantum bits ("qubits"). Various technological platforms are being explored to address this challenge, with semiconductor-based approaches standing out for their scalability and compatibility with industrial semiconductor manufacturing.

This project focuses on developing an advanced semiconductor-based material platform for quantum technologies, utilizing germanium quantum wells embedded in silicon-germanium heterostructures. These Ge/SiGe heterostructures will be developed and fabricated by IHP on standard Si(100) 200 mm wafers within its BiCMOS pilot line.

Nanoelectronic devices will be produced from the developed germanium material by IHP’s joint lab partner, JARA-IQI, and tested at extremely low temperatures, near absolute zero, to assess their viability as qubits. The project will investigate both spin-based and superconducting qubits.

A key objective is to ensure that the development of these devices remains compatible with conventional semiconductor manufacturing processes, enabling seamless integration. The insights gained into the physics and material properties of the germanium platform will be leveraged to advance the industry-compatible fabrication of qubits, significantly accelerating the development of a functional quantum computer in Germany.