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Quantum Engineering
Second-generation quantum technologies utilize quantum physical effects such as superposition states and entanglement for new technological applications. In recent years, the development of quantum engineering has progressed at an impressive pace as part of the so-called second quantum revolution, which refers to the practical application of quantum technologies. One focus is on the construction of hardware platforms for quantum computers and technologies with increased security for communication (quantum communication) and for sensors and measuring devices with increased precision (quantum sensor technology).
Current Research Projects
Project lead: Szabolcs Góger
Funding: European Union
Molecular polaritonics is an emerging field of research with potential applications in manipulating chemical processes and regulating energy transfer. Polaritons – coupled systems of molecules and resonant electromagnetic fields in quantum cavities – possess unique properties, enabling non-invasive influence over molecular systems. While calculating the potential energy surfaces of polaritons is possible, the description of other properties remains a challenge. With the support of the Marie Skłodowska-Curie Actions programme, the QEDControl project will formulate theories and develop techniques for calculating polaritonic response properties in quantum cavities. Leveraging theoretical molecular physics, high-performance software development and applied computational chemistry methods, it aims to establish a theoretical framework and software tools that will enable the future design of chemical processes in quantum cavities.
Project lead: Christoph Becher
Funding: Federal Ministry of Research, Technology, and Space (BMFTR)
In the QR.N project, more than 40 partners from research and industry are working to further develop quantum repeaters—devices that enable secure data transmission over long distances and thus form the basis for future tap-proof quantum networks.
Quantum repeaters are necessary because entangled light particles can be lost over long distances. The technology is designed to ensure that quantum data can be reliably stored, passed on, and transmitted across multiple nodes – not only in the laboratory, but also on real test tracks.
In the long term, QR.N should help enable ultra-secure communication networks and even the networking of future quantum computers – an important contribution to the IT security of tomorrow.
Project lead: Jürgen Eschner
Funding: Federal Ministry of Research, Technology, and Space (BMFTR)
QuantumMiniLabs aims to make quantum physics accessible to everyone. To this end, the project is developing an affordable, modular, and easy-to-use experimental environment that will be distributed to 100 learning locations in Germany. This will enable schools and educational institutions without expensive laboratories to conduct practical quantum experiments.
The mini-labs are based on robust quantum systems at room temperature, such as diamonds with nitrogen vacancies. This allows learners to experience for themselves how fundamental quantum effects work – from quantum cryptography to simple sensor experiments. The project aims to promote broad understanding and enthusiasm for quantum technologies.
Project lead: Christoph Becher
Funding: Federal Ministry of Research, Technology, and Space (BMFTR)
VOMBAT is developing a tiny light source on a chip that generates entangled photons—special light particles that are ideal for particularly secure quantum communication.
These photons are to be generated precisely in the telecommunications frequency ranges so that they can be transmitted with low loss over existing fiber optic networks. To achieve this, the project integrates lasers, photon sources, and distribution technology directly onto a single chip. This makes the technology more compact, cheaper, and easier to use on a large scale.
If successful, quantum-secure communication systems could become much simpler, more energy-efficient, and suitable for mass use in the future – an important step toward a more secure digital infrastructure.
The Center for Quantum Technologies (QuTe) is supported by the Transformation Program Research and Knowledge Transfer Saar.