We investigate the growth of amorphous MoSi thin films using magnetron co-sputtering and optimize the growth conditions with respect to crystal structure and superconducting properties (e.g.,…
The mechanical properties of thin films can vary significantly due to variations in the deposition process. Monitoring these properties is essential when, e.g., engineering micro-mechanical devices.…
The resistance of a heavy metal can be modulated by an adjacent magnetic material through the combined effects of the spin Hall effect, inverse spin Hall effect, and dissipation of the spin…
Altermagnetism has surfaced as a novel magnetic phase, bridging the properties of ferro- and anti-ferromagnetism. The momentum-dependent spin-splitting observed in these materials reflects their…
The Quantum Entrepreneurship Lab (QEL) is a one-semester, project-based course at the Technical University of Munich (TUM), designed to bridge the gap between academic research and industrial…
PRO MERITIS SCIENTIAE ET LITTERARURUM award from the State Ministry of Science and the Arts for BAdW member and WMI Director Rudolf Gross
The WMI welcomed a group of curious high school students from the Rainer-Maria-Rilke-Gymnasium in Icking, Germany.
WMI has successfully demonstrated a multi-purpose coupling element
for scalable architectures based on frequency-selective parametric drives,
Dissipative transport of both fermionic and bosonic particles belongs to the Kardar–Parisi–Zhang universality class.
We introduce a driven-dissipative Floquet model in which a single harmonic oscillator with modulated frequency and decay realizes a non-Hermitian synthetic lattice with an effective electric field…
Quantum state tomography of weak microwave signals is an important part of many protocols in the field of quantum information processing with superconducting circuits. This step typically relies on…
Scalable quantum information processing with superconducting circuits is expected to advance from individual processors located in single dilution refrigerators to more powerful distributed quantum…
Correlations in squeezed superradiant bursts are shown to be entangled globally, but classical locally.
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…
WMI researchers realized an improved version of Planck spectroscopy, allowing them to resolve changes in microwave losses of less than 0.1 dB.
In its cabinet meeting on 11/02/2025, the Bavarian State Government decided to strengthen MQV as one of the key projects of its Hightech Agenda.
We implemented Perfect State Transfer and demonstrated its usefulness in efficiently connecting distant qubits and generating multi-qubit entanglement
Quantum communication exploits non-classical correlations to achieve efficient and unconditionally secure exchange of information. In particular, the quantum teleportation protocol allows for a…
Scaling up superconducting quantum processors requires a high routing density for readout and control lines, relying on low-loss interconnects to maintain design flexibility and device performance.…
Rudolf Gross retires as Scientific Director of the WMI after shaping the institute for 25 years.
The German Science foundation (DFG) funds the research unit ‘Chiral phonons for spintronics (CHIPS)‘.
The Alexander von Humboldt Foundation awards Prof. Dr. Rudolf Gross the Werner Heisenberg Medal.
The research unit ‘Chiral phonons for spintronics (CHIPS)‘ wants to understand the physical properties of these chiral phonons in connection with magnetism and spintronics, i.e. in connection with…
This study delves into spin current-induced phenomena, such as spin-Hall magnetoresistance and the spin Seebeck effect within Pt films deposited on a noncollinear magnet, CoCr 2O 4 (CCO),…
We develop a theoretical model for polarization-selective phonon pumping induced by magnon-phonon coupling in a ferromagnetic/non-magnetic acoustic bilayer structure, focusing on the effects arising…
The Schoolkindergarten "Weltentdecker" from Neufahrn b. Freising visited the Walther-Meißner-Institut.
WMI succeeds in fabricating Josephson junction-based parametric devices with exceptionally high quality factors
WMI develops a cryogenic link for Quantum Local Area Networks (QLAN), serving as a backbone for distributed superconducting quantum computing
Spin-based information processing is a viable alternative to charge-based approaches, enabling low-power devices. In magnetically ordered systems, spin information can be transported via the…
The Junior Research Group will advance quantum processor calibration and stabilization using machine learning and quantum sensing.
The European consortium OpenSuperQPlus (OSQ+) is making significant strides toward building Europe’s first 100-qubit quantum computer by 2026.
The distribution of remote entanglement within small- and large-scale quantum networks is becoming a fundamental task as quantum computing and quantum communication mature into more advanced fields.…
We optimize Matrix-Product State (MPS)-based algorithms for simulating quantum circuits with finite fidelity, specifically the Time-Evolving Block Decimation (TEBD) and the Density-Matrix…
We study a generic cavity QED setup under conditions where the coupling between the two-level systems and a single bosonic mode is significantly degraded by low-frequency noise. To overcome this…
We study the collective decay of an initially inverted ensemble of two-level emitters into a squeezed photonic reservoir. By using a quantum-state diffusion approach to unravel the emission process,…
We study the directed transport of bosons along a one dimensional lattice in a dissipative setting, where the hopping is only facilitated by coupling to a Markovian reservoir. By combining numerical…
Universal quantum computers promise to solve computational problems that are beyond the capabilities of known classical algorithms. To realize such quantum hardware on a superconducting material…
We extend the controlled displacement interaction between a qubit and a harmonic oscillator to the multiqubit (qudit) case. We define discrete quadratures of the qudit and show how the qudit state…
Rudolf Gross has been appointed TUM Emeritus of Excellence and becomes a member of the TUM Senior Excellence Faculty (SEF).
The analytical study of confinement in lattice gauge theories (LGTs) remains a difficult task to this day. Taking a geometric perspective on confinement, we develop a real-space renormalization group…
Our former Bachelor and Master student Johanna Fischer (now at Spintec Grenoble, France) receives the 2025 EMA Young Scientist Award.
| Walther-Meißner-Institut
Abrikosov vortices in type-II superconductors critically influence current flow and coherence, thereby imposing fundamental limits on superconducting quantum technologies. Quantum circuits employ…
The efficient transfer of quantum states into a long-lived storage unit such as solid-state spin ensembles is widely recognized as a critical challenge with significant implications for quantum…
We study the collective emission of a disordered array of N excited two-level atoms into a one-dimensional photonic waveguide. In the perfectly ordered case, where atoms are spaced by exact integer…
We discuss a conceptually simple scheme for cooling a one dimensional gas of microwave photons in a superconducting transmission line. By shunting one end of the transmission line by a nonlinear…
We present a general theoretical framework for evaluating multi-photon processes in periodically driven quantum systems, which have been identified as a versatile tool for engineering and controlling…
One main limiting factor towards achieving high coherence times in superconducting circuits is two level system (TLS) losses. Mitigating such losses requires controlling the formation of native…
We investigate the dynamics of a lasing system that is driven by a current of bosonic (quasi-) particles via a dissipative three-mode mixing process. A semi-classical analysis of this system predicts…
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…
