our mission

We explore the physics at low and ultra-low temperatures with special focus on superconductivity and magnetism as well as on the control of quantum systems in the field of quantum technologies.

WMI authors publish new textbook

The third revised and extended edition of the textbook on "Solid-State Physics. Exercises and Solutions" by Gross, Marx, Einzel and Geprägs appeared.

Open air QKD at µ-wave frequencies is in reach

WMI demonstrates that open air QKD with propagating microwaves can be unconditionally secure with communication at room temperature up to 200 m

MCQST Best Master Thesis Prize for Wun Kwan Yam

Wun Kwan Yam received the MCQSTBest Master Thesis Award 2023 for his master thesis entitled Microwave Quantum Teleportation Over a Thermal Channel.

what we do
Our field
of research
Quantum Systems
We study the fundamental physics of solid-state based quantum systems and advance their fabrication technology to lay the basis for applications in quantum computing, quantum communication, and quantum sensing.
Quantum Communication and Sensing
We study the foundations of quantum microwave communication and sensing. We also develop quantum microwave technologies for the realization of quantum local area networks and advanced sensing methods.
Quantum Computing and Information Processing
Our mission is to investigate complex quantum systems, engineer novel devices and educate students to advance quantum technologies for scientific and societal impact.
Quantum Theory
We develop analytic and numerical methods for modelling the quantum properties of superconducting circuits, nanomechanical devices, spin ensembles and hybrid quantum systems. Our goal is to identify improved protocols for practical quantum communication and quantum information processing applications, but also to explore novel quantum many-body phenomena that arise in such artificial quantum devices with specifically engineered properties and interactions.
Magnetism and Spintronics
We study the ordering of spins, magnetization dynamics and spin transport in magnetic materials to understand the formation of complex spin textures, their high-frequency response and the transport of angular momentum. We fabricate complex magnetic heterostructures and nanostructures required for advanced data storage and the next-generation spintronic devices.
Superconductivity and Correlated Electron Systems
Superconductivity is one of the most fascinating but also complex and challenging phenomena in solid-state physics. We focus on the fundamental understanding of the mechanism of superconductivity in materials such as the cuprates, iron pnictides or organic metals.
whats happening
News & Events

One of the cornerstones of quantum communication is the unconditionally secure distribution of classical keys between remote parties by making use of the quantum properties of propagating electromagnetic waves. Now WMI researches demonstrate that continuous-variable quantum key distribution with propagating microwaves can be unconditionally secure with communication at room temperature up to distances of around 200 m. Most remarkable, they show that microwaves can potentially outperform conventional quantum key distribution at telecom wavelengths and imperfect weather conditions.


In an international collaboration with Japanese colleagues, WMI researchers developed a nonlinear Quantum Microwave Parametric Interferometer (QuMPI) based on superconducting quantum circuits. Interferometers are powerful tools for precision measurements in a plethora of research fields and applications. The accuracy of classical devices is bound by the standard quantum limit. However, this limit can be overcome by using quantum states or nonlinear quantum elements. WMI now succeeded to realize a nonlinear QuMPI. The fascinating properties of this device range from a signal-to-noise ratio exceeding the shot-noise limit to sub-Poissonian intensity fluctuations between its outputs. QuMPIs will promote applications ranging from quantum illumination to the search for axionic dark matter.

Rudolf Gross becomes new MQV Scientific Director

On 1 August 2023, Rudolf Gross becomes Scientific Director of the Munich Quantum Valley (MQV) and Managing Director of the Munich Quantum Valley e.V. association. He takes over the tasks from Rainer Blatt, who hands over the baton to him after about two years. Rudolf Gross has been closely associated with MQV from the very beginning: Together with Immanuel Bloch, Ignacio Cirac, Klaus Blaum and Raoul Klingner, he authored the strategy paper that led to the foundation of MQV. Since 2021, he is member of MQV and coordinates the Quantum Technology Park & Entrepreneurship (QTPE) consortium. He is also PI within the two MQV lighthouse projects NeQuS and IQ-Sense.


In an international collaboration, WMI researchers succeeded in the levitation of a superconducting lead-tin sphere with 100 μm diameter (corresponding to a mass of 5.6 μg) in a static magnetic trap with a resonance frequency of 240 Hz and quality facor above 107. The combination of low temperature, large mass, and high quality factor provides a promising platform for testing quantum physics in previously unexplored regimes with high mass and long coherence times.

Quantum Technologies: Politics & Governance

In a panel discussion on "Quantum Technologies: Politics & Governance" moderated by Ulrich Mans (Quantum Delta NL) within the World of QUANTUM 2023, Petra Wolff (BMBF, Referat 514, QComputing/QTechnologies), Heike Riehl (IBM Research), Marianne Schoerling (GESDA, Open Quantum Institute), and Rudolf Gross (WMI, MCQST, MQV) discussed strategies and measures to promote quantum sciences and technologies in Europe. In particular, they addressed the questions what the EU’s position can be in the global quantum race and what type of European cooperation in QST is needed to achieve longterm technology leadership in Europe. 

WMI authors publish new textbook

The extended 3rd edition of the textbook "Festkörperphysik: Aufgaben und Lösungen" by Gross, Marx, Einzel and Geprägs appeared at De Gruyter Oldenbourg. By providing full solutions, the exercise book with over 100 tasks and complete sample solutions allows students to both consolidate and expand their knowledge and to test what they have learned. The extended 3rd edition with many new exercises on topolgical quantum matter is ideally suited for exam  preparation.