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At a glance | Challenges | Solutions | Contact | Research Groups
At a glance
In the “Quantum Computing” topic, Jülich covers the entire spectrum of technology development – from theory and modelling and the design of circuits and suitable cryogenic control electronics right up to the development of prototypes and applications. It works together with the “Quantum Materials” topic and incorporates developments from the materials sector.
Quantum computers promise to fundamentally change computing in future. They are expected to solve tasks in minutes that are currently considered unsolvable for the world’s fastest supercomputers. Second-generation quantum technologies such as quantum computers, quantum sensors, and quantum communication are also set to open up new applications – in the use of artificial intelligence, medical diagnostics, the optimization of energy and transport networks or production processes, the calculation of chemical and biological processes, or secure communication.
Challenges
In order to build quantum computers capable of solving specific problems, millions of qubits must function simultaneously. Particularly challenging aspects include susceptibility to errors due to external disruptions and scalability. Technological infrastructure, such as the extremely low temperatures required for superconducting qubits, is also extremely demanding.
Reliable quantum computing therefore requires extremely precise control of the qubits as well as quantum states that are as stable as possible. Even the slightest inaccuracy can lead to errors that render the entire calculation invalid. The development of algorithms that fully utilize the unique capabilities of quantum computers is also a challenge. These algorithms require new paradigms and methods that go far beyond what is needed for traditional systems.
Solutions
The significant contribution of Jülich experts incorporates all areas of quantum research: from quantum hardware based on superconducting and semiconductor qubits to the scaling of processors with many qubits and advanced system elements – such as cryoelectronics for qubit control at temperatures close to absolute zero (minus 273 °C), the operating temperature of many solid-state-based qubit types. Interdisciplinary teams from science and technical engineering create detailed instrument models that contribute to hardware optimization.
An additional focus is basic research as well as theoretical physics and mathematical models that play a significant role in quantum error correction. Jülich scientists conduct research on different error correction methods to protect quantum processors from disruptions. The theory of optimal control developed by Jülich researchers is being expanded and applied in experiments.
The innovative control software required for quantum computing is being developed by Jülich experts on all levels – from compilation for optimal performance to the development of application-oriented quantum algorithms.
The Jülich supercomputers can also be used to simulate quantum computers and test programs. In future, quantum computers will be combined with supercomputers to form hybrid systems in collaboration with scientists from the Jülich Supercomputing Centre as part of the “Engineering Digital Futures” programme. The power of quantum computers can thus already be harnessed for initial practical applications.
A number of start-ups have emerged from this field in the last few years, including Qruise and ARQUE Systems, which specialize in the development of firmware for quantum computers and software solutions for quantum computers and high-performance computers.
New technologies can help to make planned quantum computers even more powerful and boost their transfer into applications. To this end, new laboratories dedicated to specific topics are being built, such as the Helmholtz Quantum Center (HQC). With the HQC, Jülich will possess a unique central technology centre in which researchers can work together on different aspects of development. Located in the immediate vicinity of the HQC is the Helmholtz Nano Facility (HNF), a cleanroom facility in which quantum components and chips can be produced.
As a national research centre within the Helmholtz Association, Forschungszentrum Jülich is playing a significant role in the development of technology in major projects on a national level as well as in the “Quantum Flagship” initiative on a European level. In projects such as QSolid or OpenSuperQPlus, all facets of quantum technologies are being explored and quantum computers are being built in Germany and Europe as part of a collaborative effort.
The research and development of quantum computers will also be supported by the Jülich Quantum Computing Alliance (JUQCA), which is a contact partner for researchers at the participating institutes as well as for internal and external partners.
Contact
Jülich Contact Person
Prof. Dr. David DiVincenzo
Director, Institute for Theoretical Nanoelectronics (PGI-2) and JARA Institute for Quantum Information (PGI-11)
- Peter Grünberg Institute (PGI)
- Theoretical Nanoelectronics (PGI-2)
Building 04.8 /
Room R 263
Room R 263
+49 2461/61-9069
E-Mail
Principal Investigators
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Last Modified: 07.02.2025