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Organic Metals and Superconductors
From the everyday experience one normally identifies organic materials as electrical insulators. However, there is a class of synthetic molecular charge-transfer
Successful Quantum Teleportation at Microwave Frequencies
22 December 2021
Quantum teleportation goes microwave
An international team headed by physicists from the Walther-Meißner-Institute (WMI)
Peter Eder was member of the Gross group at WMI as a master and Ph.D. student between 2012 and 2021.
Master Thesis: Dual-path Receiver for State Reconstruction of Propagating Quantum Microwaves
We study the interaction of surface acoustic waves with spin waves in ultrathin CoFeB/Pt bilayers. Because of the interfacial Dzyaloshinskii–Moriya interaction (DMI), the spin wave dispersion is
Angular momentum transport is one of the cornerstones of spintronics. Spin angular momentum is not only transported by mobile charge carriers but also by the quantized excitations of the magnetic
From the everyday experience one normally identifies organic materials as electrical insulators. However, there is a class of synthetic molecular charge-transfer salts, which exhibit metallic
Successful Quantum Teleportation at Microwave Frequencies
22 December 2021
Quantum teleportation goes microwave
An international team headed by physicists from the Walther-Meißner-Institute (WMI)
We study the ordering of spins, the magnetization dynamics, and the spin transport in magnetic materials to understand the formation of complex spin textures, their high-frequency response and the
The controlled deposition of (ultra)thin films and compex heterostructures is key for the successful investigation of quantum effects in solid-state devices and the implementation of novel electronic
Superconducting circuits have become a key platform in the field of quantum technology. This work contributes to the field of microwave quantum photonics by scattering experiments of microwave
Sibylle Meyer was member of the Gross group as a master and Ph.D. student between 2011 and 2015.
Master Thesis: Magneto-thermogalvanische Experimente an (Ga,Mn)As Dünnfilmen (2012) Ph.D. Thesis:
Liquid Helium Pump
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
A Submersible Pump for Liquid Helium
Because the storage vessels for liquid helium only have small openings for installing a pump, small dimensions at large pump capacity are key requirements.
We report 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 formed by two coils in an anti-Helmholtz
The WMI Helium Liquefaction Plant
A Long Tradition in Helium Liquefaction
The Walther-Meißner-Institute (WMI) has been operating a helium liquefaction plant for more than 60 years and supplies the
Gross Group: Open Topics for Master Theses
Microwave quantum communication and sensing
Microwaves in the frequency range of 1-10 GHz are the natural frequency scale for many well-known
Ferroelectricity, where electronic degrees of freedom determine the polar order—thereby enabling fast switching and phase control—is an important research field in current condensed-matter physics.
Non-reciprocal magnonic devices (experiment)
Spin waves (magnons) are the quantized excitations of the magnetic lattice in solid state systems. The field of magnonics is exploring concepts to use
Magnetic resonance spectroscopy in two-dimensional ferromagnets (experiment)
Dimensionality crucially influences the properties of materials. Two-dimensional (2d) van der Waals materials in the
Walther-Meißner-Seminar WS 2023/24
Seminar Program WS 2023/2024
Time: Friday, 11.15 h Place: Seminar Room 143,
Seminar Program WS 2023/2024
Time: Friday, 11.15 h Place: Seminar Room 143, Walther-Meißner-Institute,
Microwave quantum networks are set to play an important role in the future quantum science and technology. They can be utilized as a versatile experimental platform for fundamental studies of
Manifesting across all time, mass and length scales, nonlinearities lie at the core of numerous physical phenomena. Next-generation quantum applications, such as quantum sensing, require the
The Present Liquefaction Plant Based on a VL 100 Liquefier
At present, the WMI helium liquefaction plant is based on the VL 100 helium liquefier from Vorbuchner GmbH. The VL 100 liquefier is a
