The KompaQD project is creating a compact and mobile two-qubit quantum computing demonstrator based on solid-state spins in silicon carbide. In addition to using the demonstrator for training and further education, the system demonstrates that quantum technology can also be used outside of laboratories.


Quantum computers are large, fragile systems and their theoretical foundations full of complex mathematics make them inaccessible and incomprehensible to the layman. We would like to counter these prejudices with a platform. The aim is to use a compact and mobile system to make the hardware and thus the fundamentals tangible, so that the interaction between the control electronics, the physical quantum system and thus the operational basis can be better communicated. There are many different types of quantum computers – and each has its own pitfalls and tricks. This results in various advantages and disadvantages, which are often confused. The system provides a valuable bridge by answering the question: “What is fundamentally needed for a quantum computer?” and a simple demonstration of how an algorithm on a quantum computer can process information with fewer operations than on a classical computing system.


One of the innovations in the project is the use of silicon carbide as a base material. This material is already widely used in the semiconductor industry for power components, but is still a young technology in quantum technology. The advantages of the material lie in its availability, mature production technology and a large zoo of available defect centres with different properties for various applications. However, the new material platform also raises new issues, such as the integration of special detectors. Another challenge is the robust operation outside of laboratory environments and the compact design of the system. Temperature fluctuations, ambient noise and vibrations disrupt the sensitive quantum states. However, with clever solutions and engineering expertise, these challenges can also be overcome in a compact system.

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