{"id":83046,"date":"2025-03-19T08:45:00","date_gmt":"2025-03-19T07:45:00","guid":{"rendered":"https:\/\/aktuelles.uni-frankfurt.de\/?p=83046"},"modified":"2025-03-13T17:17:27","modified_gmt":"2025-03-13T16:17:27","slug":"hesses-first-quantum-computer-at-goethe-university-frankfurt","status":"publish","type":"post","link":"https:\/\/aktuelles.uni-frankfurt.de\/en\/english\/hesses-first-quantum-computer-at-goethe-university-frankfurt\/","title":{"rendered":"Hesse\u2019s first quantum computer at Goethe University Frankfurt"},"content":{"rendered":"

In mid-December, \u201cBaby Diamond\u201d was officially commissioned at the Institute of Computer Science.<\/strong><\/p>\n\n\n\n

Quantum computers promise great things. They are set to become the next generation of computers, calculating much faster than today\u2019s supercomputers, and in a much more energy-efficient manner. They seek to make agriculture and transport more sustainable, cities and networks more intelligent, and medicines more effective. They are capable of simulating the weather, the climate and the environment to protect biodiversity and combat climate change. In short, they promise the resolution of complex global problems on the path to a sustainable future \u2013 and so much more \u2013 by tackling complex questions in physics and chemistry, artificial intelligence and the world of finance.<\/p>\n\n\n\n

All these promises are based on the fundamentally new way that quantum computers operate. \u201cNormal\u201d computers, laptops and smartphones work with bits as units of information. A bit can be 0 or 1, which is mapped by the presence or absence of an electrical voltage. \u201cNo voltage\u201d stands for 0, and \u201cvoltage\u201d stands for 1.<\/p>\n\n\n\n

Quantum bits \u2013 also known as \u201cqubits\u201d \u2013 are different. In addition to 0 and 1, they can represent many other states in between. This means that carrying out the same calculation on them requires fewer qubits than bits. What is more, the qubits can be connected with one another via quantum entanglement. This makes quantum computers much more efficient than binary computers. Whereas the computational power of conventional computers increases in a linear fashion as the number of bits rises, a quantum computer\u2019s computational power increases exponentially with the number of qubits. Thomas Lippert, Professor of Modular Supercomputing and Quantum Computing at Goethe University\u2019s Institute of Computer Science, explains: \u201cTo simulate a state with two qubits, we need four complex numbers, which means that rather than six, it takes eight to simulate a state with three qubits. This means that 50 qubits can encode not 100 numbers, but 2 to the power of 50 complex numbers \u2013 that\u2019s more than one quadrillion.\u201d<\/p>\n\n\n\n

<\/div>\n\n\n\n

Enormous computing capacity when combined with conventional computers<\/h2>\n\n\n\n

Lippert is convinced that quantum computers will one day be able to fulfill at least some of their promises \u2013 maybe not on their own, but definitely when used in combination with conventional binary computers. He explains: \u201cQuantum computers aren\u2019t being built to replace high-performance computers. Since they are pretty poor at traditional arithmetic, this is a field where quantum computers can only be employed to a very limited extent. Instead, we need them as a supplement to open up areas that we simply haven\u2019t been able to calculate before now.\u201d First and foremost, he adds, is planning traffic routes or flight schedules. \u201cAs such, we\u2019ll be able to re-optimize and control the traffic situation in a major city every few seconds.\u201d<\/p>\n\n\n\n

Computer expert Lippert has been working to ensure that Goethe University gets its own quantum computer, the first in the state of Hesse. The machine, called \u201cBaby Diamond,\u201d was supplied by start-up company XeedQ. Its core consists of a small industrial diamond into which nitrogen atoms have been inserted. This creates flaws in the diamond\u2019s crystalline carbon lattice, where a laser can excite the atoms into various states that are used as qubits.<\/p>\n\n\n\n

With five qubits, this quantum computer is relatively small, but unlike others of its kind \u2013 which have to be supercooled close to absolute zero using liquid helium \u2013 it can operate at 20 degrees Celsius. This makes it exceptionally suitable for research, as Lippert explains: \u201cOur \u2018Baby Diamond\u2019 has three jobs to do. We will use it to research the best way of using a quantum computer, and we will develop quantum algorithms and applications, particularly in combination with supercomputers. Last but not least, \u2018Baby Diamond\u2019 is the first step toward a quantum computing infrastructure for users from research, the National High Performance Computing (NHR) Alliance, and in particular from regional companies.\u201d<\/p>\n\n\n\n

<\/div>\n\n\n\n

Quantum power, historic location<\/h2>\n\n\n\n
\"(From
(From left) Prof. Enrico Schleiff, President of Goethe University; Prof. Thomas Lippert, quantum computer expert, Goethe University and Forschungszentrum J\u00fclich; Prof. Kristina Sinemus, Hessian Minister for Digitalization and Innovation; Timon Gremmels, Hessian Minister of Science and Research, Art and Culture. Photo: Uwe Dettmar.<\/figcaption><\/figure>\n\n\n\n

\u201cBaby Diamond\u201d was ceremonially commissioned at the end of 2024 \u2013 \u201cchristening the baby,\u201d as Goethe University President Prof. Enrico Schleiff put it, while drawing attention to the noteworthy location of Hesse\u2019s first quantum computer: \u201cIn the night from February 7 to 8, 1922, physicists Otto Stern and Walther Gerlach succeeded in conducting an experiment barely 100 meters from here at what was then a very young Goethe University. That experiment earned Otto Stern the Nobel Prize in 1943 and is known today as the Stern-Gerlach experiment.\u201d The two scientists showed that an atom\u2019s magnetic moment cannot adopt just any direction, but is quantized. Schleiff explained: \u201cThis was a milestone in quantum physics and laid the foundation for nuclear magnetic resonance spectroscopy, atomic clocks, lasers \u2013 and also quantum computers.\u201d He asked the political representatives present \u2013 Hesse\u2019s Science Minister Timon Gremmels and Digitalization Minister Kristina Sinemus \u2013 to be baby\u2019s \u201cgodparents,\u201d to which both happily agreed.<\/p>\n\n\n\n

Science Minister Gremmels stated: \u201cThe first functional quantum computer at a Hessian university is truly a cause for celebration. Goethe University\u2019s competence and expertise in traditional high-performance computing are already demonstrated by its impressive successes and good rankings among the world\u2019s most powerful and energy-efficient high-performance computers. That is now being supplemented and enriched with the new quantum computing technology.\u201d The minister added that the interaction between traditional high-performance computers and quantum computers was sure to be crucial in the future. \u201cWe need the courage to try out new things, test new technologies in practice, and integrate tried-and-tested methods. All of this is being done here on site \u2013 testimony to the fact that the state of Hesse is at the forefront of developments.\u201d<\/p>\n\n\n\n

Prof. Kristina Sinemus, Hessian Minister for Digitalization and Innovation, added: \u201cQuantum computing is a key technology of the future, offering enormous potential for value creation and innovation. In Hesse, we have laid a strong foundation in recent years to actively shape this development \u2013 with an excellent ecosystem of cutting-edge research, artificial intelligence and applied quantum computing, which is already firmly anchored in our digital strategy. The launch of \u2018Baby Diamond\u2019 at Goethe University is an impressive demonstration of how Hesse is helping to shape Europe\u2019s digitalization.\u201d<\/p>\n\n\n\n

<\/div>\n\n\n\n

Enrichment for studies and research<\/h2>\n\n\n\n

Ulrich Schielein, Goethe University Vice President and Chief Information Officer, added: \u201cThe exciting thing about \u2018Baby Diamond\u2019 is that our researchers and students can actually control small details of the microwave pulse forms that manipulate the quantum bits and their interactions. Thanks to \u2018Baby Diamond\u2019, Goethe University\u2019s students have the opportunity \u2013 unique anywhere in Germany \u2013 of having direct contact with a real quantum computer.\u201d In just a few years, Schielein said, Goethe University\u2019s theoretical competence and extensive practical experience could qualify it to apply for a quantum computer in the 100-qubit class, which would put the university in academic pole position.<\/p>\n\n\n\n

\"\"
All eyes on \u201cBaby Diamond\u201d. Photo: Uwe Dettmar.<\/figcaption><\/figure>\n\n\n\n

\u201cBaby Diamond\u201d already has a comprehensive schedule. The Frankfurt group led by Prof. Thomas Lippert will cooperate with scientists in the Netherlands and France to develop methodological applications, including new paths in machine learning, procedures for error correction in quantum computer systems (which are still very susceptible to errors), and new algorithms for prime factorization. The first concrete applications are also waiting for \u201cBaby Diamond\u201d, including the calculation of problems from quantum chemistry, the optimization of finance portfolios (e.g. for retirement provision), and the optimization of nursing staff schedules as part of a hospital application. There is huge interest, according to Lippert, especially among students interested in and familiar with the field. \u201cThey\u2019re already queuing up to obtain their first hands-on experience with the system.\u201d<\/p>\n\n\n\n

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