The History and Status of Helium Production
On Earth, helium is relatively rare (5.2 ppm by volume in the atmosphere) and, therefore, direct extraction from the atmosphere is too expensive. In 1903,
A Brief History of WMI
The scientific roots of WMI go back to Walther Meißner (1882-1974). He was appointed to the Chair of Technical Physics at the TH Munich (now Technical University of Munich) in
The first research activities were started in the Herrsching barracks already in 1946 . After the retirement of Walther Meißner in 1952, Heinz Maier-Leibnitz, who also followed Walther Meißner on
Quantum science and technology is a vibrant and multidisciplinary field of research at the interface of physics, mathematics, computer science and material science. With over twenty experimental and
Quantum communication is expected to become an important building block of the secure digital infrastructure in our future society. In quantum communication, the exchange of unconditionally secure
Optimization of the Energy Efficiency of Helium Liquefaction Systems
For the operation of a helium liquefaction plant besides operational safety the most crucial figure of merrit is energy
A magnonic spin current crossing a ferromagnet-metal interface is accompanied by spin current shot noise arising from the discrete quanta of spin carried by magnons. In thin films, for example, the
New-generation direct searches for low mass dark matter feature detection thresholds at energies well below 100 eV, much lower than the energies of commonly used x-ray calibration sources. This
The CRESST experiment employs cryogenic calorimeters for the sensitive measurement of nuclear recoils induced by dark matter particles. The recorded signals need to undergo a careful cleaning process
In solid state materials, gradients of the electro-chemical potential, the temperature, or the spin-chemical potential drive the flow of charge, heat, and spin angular momentum, resulting in a net
We propose a hybrid quantum computing architecture composed of alternating fluxonium and transmon qubits, that are coupled via transmon tunable couplers. We show that this system offers excellent
Colloquium on Solid State Physics SS2023
Summer Semester 2023
Time: Thursday, 17.15 h Place: Lecture Hall 3, Department of Physics,
Summer Semester 2023
Time: Thursday, 17.15 h Place: Lecture Hall 3, Department of Physics, James-Franck-Str. 1, D-85748 Garching
| Mikel Sanz, Kirill G. Fedorov, Frank Deppe, Enrique Solano
WMI researchers demonstrate microwave single-shot quantum key distribution, allowing for unconditional security in µw-based communication.
We realize a deterministic quantum communication protocol using continuous-variable quantum microwaves. We employ Josephson parametric amplifiers to generate single- and two-mode squeezed states and
One of the cornerstones of quantum communication is the unconditionally secure distribution of classical keys between remote parties. This key feature of quantum technology is based on the quantum
Starting from 2000, the research program of WMI was considerably extended and reoriented by the new director Rudolf Gross. In particular, the new research directions (i) magnetism and spin
Prof. Hans Huebl is permanent staff scientist and scientific director (interim) at the Walther-Meißner-Institut of the Bavarian Academy of Sciences and Humanities and adjunct Professor at the
Michael Renger was member of the Gross group at WMI as a master and Ph.D. student between 2017 and 2023.
Master Thesis: Quantum Process Tomography of a 3D Quantum Memory (2018) Ph.D. Thesis: Quantum
Matti Partanen was member of the Gross group at WMI as a postdoctoral researcher between 2019 and 2020.
Matti was supporting the WMI research efforts in the EU Quantum Flagship Project Quantum
Stefan Pogorzalek was member of the Gross group at WMI as a Master and Ph.D. Student, as well as a postdoctoral researcher between 2015 and 2021.
Master Thesis: Displacement of Squeezed Propagating
Oscar Gargiulo was member of the Gross group as a postdoc between April 2021 and January 2022.
Oscar was supporting the WMI reseach acticities within the EU Quantum Flagship Project Qunatum
Watch how our team members approach scientific communication within the EU ITN QuSCo.
The BMBF funded program "Grand Challenge in Quantum Communication" had its kick-off meeting at TUM.
Ling Zhong was member of the Gross group at WMI as a Ph.D. student between November 2011 and August 2015.
Ph.D. Thesis: Generation and Reconstruction of Propagating Quantum Microwaves (2015)
In his
Developing schemes for efficient and broadband frequency conversion of quantum signals is an ongoing challenge in the field of modern quantum information. The coherent conversion between microwave
The new theory group at WMI is also an important cornerstone of the Munich Quantum Valley e.V. (MQV). It particularly aims at strengthening the theory activities in the field of interdisciplinary
Magnons Prefer a Sense of Rotation Dancing the Waltz
Observation of the Nonreciprocal Magnon Hanle Effect in Antiferromagnets
A team of researchers from the Bavarian Academy of Sciences and
Nanoscale quantum optics explores quantum phenomena in nanophotonics systems for advancing fundamental knowledge in nano and quantum optics and for harnessing the laws of quantum physics in the
| Xiang, Ze-Liang and Zhang, Mengzhen and Jiang, Liang and Rabl, Peter
| Stannigel, K. and Rabl, P. and Sorensen, A. S. and Zoller, P. and Lukin, M. D.
In information technology, nonreciprocal devices are of key importance. They let information carriers only move forward and not backward or let them circulate only clockwise and not
Broadband electron spin resonance spectroscopy of 170Erbium spins in Silicon
Silicon-based devices are deeply integrated into our todays information and communication technology. Therefore, silicon
Broadband electron spin resonance spectroscopy of 167Erbium spins in Silicon
Silicon-based devices are deeply integrated into our todays information and communication technology. Therefore, silicon
WMI demonstrates that open air QKD with propagating microwaves can be unconditionally secure with communication at room temperature up to 200 m
The optical manipulation of magnon states in antiferromagnets (AFMs) holds significant potential for advancing AFM-based computing devices. In particular, two-magnon Raman scattering processes are
The main objective of this thesis is quantum communication with propagating quantum microwaves. The central result is the successful experimental realization of analog quantum teleportation of
S. Pogorzalek, K. G. Fedorov, M. Xu, A. Parra-Rodriguez, M. Sanz, M. Fischer, E. Xie, K. Inomata, Y. Nakamura, E. Solano, A. Marx, F. Deppe, R. Gross, Secure Quantum Remote State Preparation of
Helium-4 Resources and their Accessibility
Helium-4 is considered a critical raw material (CRM) and, so far, has often been overlooked in the resource sustainability literature compared to metals
| Edwar Xie, Frank Deppe, Michael Renger, Daniel Repp, Peter Eder, Michael Fischer, Jan Goetz, Stefan Pogorzalek, Kirill G. Fedorov, Achim Marx, and Rudolf Gross
