WMI/MQV-Seminar: Integrating Atoms and Superconductors - Towards a Unified Quantum Hardware
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…
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…
Our former Bachelor and Master student Johanna Fischer (now at Spintec Grenoble, France) receives the 2025 EMA Young Scientist Award.
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…
Researchers have demonstrated the direction-dependent slowdown of
microwave pulses, with potential applications in signal processing and
quantum computing. | Hans Huebl and Matthias Althammer
The 2025 Nobel Prize in Physics goes to three physicists from Berkeley for their research on quantum phenomena in superconducting Josephson junctions
WMI opened its doors to the general public in the context of the 2025 International Year of Quantum Science and Technology (IYQ)
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…
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…
Quantum communication in the microwave regime is set to play an important role in distributed quantum computing and hybrid quantum networks. However, typical superconducting quantum circuits require…
WMI to receive funding within the Cluster of Excellence MCQST for seven more years through 2032
We discuss the topic of quantum illumination, which is related to quantum radar technology and aims to outperform the optimal classical radar. The scheme we consider relies on quantum entangled…
WMI co-organizes the workshop on Rare-Earth Ions for Quantum Information 2024, taking place in Munich from 17 to 20 September 2024.
WMI researchers demonstrate microwave single-shot quantum key distribution, allowing for unconditional security in µw-based communication.
The layered molecular conductors κ-(BEDT-TTF)2X are a perfect experimental platform for studying the physics of the Mott transition and related exotic electronic states. In these materials, the…
"Quantum” may not be the first word that comes to mind when thinking about chemistry. But at the atomic level, the physical and chemical properties of molecules can be affected by quantum mechanical…
WMI demonstrates a highly protected superconducting qubit as building block of a scalable quantum processor with strongly suppressed qubit coherence.
Planar scanning probe microscopy is a recently emerging alternative approach to tip-based scanning probe imaging. It can scan an extended planar sensor, such as a polished bulk diamond doped with…
To control and measure the state of a quantum system, it must necessarily be coupled to external degrees of freedom. This inevitably leads to spontaneous emission via the Purcell effect,…
WMI reviews the potential of its quantum computing technology for near-term simulations of quantum chemistry.
We investigate the onset of transmon ionization (TI) in an irreversible, parametrically-driven, frequency conversion process in a 3D-cavity combined with a transmon qubit. We infer that a sudden…
Matthias Althammer was awarded a prestigious Consolidator Grant from the ERC with total funding of about 2 Mio. euros for 5 years.
Ternary hybrid thin films composed of a diblock copolymer templating two types of nanoparticles (NPs) expand the functionality of binary systems, which renders them interesting for magnetic sensing…
Dr. Hans Hübl has been appointed Adjunct Professor at TUM in recognition for many years of excellence in research and teaching.
The second place at the MCQST best poster award goes to Emily Wright from the Quantum Computing team at the WMI.
Joint development of superconducting quantum processors and quantum circuits within the Munich Quantum Valley initiated
Protecting qubits from environmental noise while maintaining strong coupling for fast high-fidelity control is a central challenge for quantum information processing. Here, we demonstrate a novel…
Multi-mode superconducting circuits offer a promising platform for engineering robust systems for quantum computation. Previous studies have shown that single-mode devices cannot simultaneously…
Achieving fast and high-fidelity qubit operations is crucial for unlocking the potential of quantum computers. In particular, reaching low gate errors in two-qubit gates has been a long-standing…
As systems for quantum computing keep growing in size and number of qubits, challenges in scaling the control capabilities are becoming increasingly relevant. Efficient schemes to simultaneously…
| Walther-Meißner-Institut
| G. Angloher, A. Erb et al., CRESST Collaboration
In recent times, the sensitivity of low-mass direct dark matter searches has been limited by unknown low energy backgrounds close to the energy threshold of the experiments known as the low energy…
Recently low-mass dark matter direct searches have been hindered by a low-energy background, drastically reducing the physics reach of the experiments. In the CRESST-III experiment, this signal is…
Diamond operated as a cryogenic calorimeter is an excellent target for direct detection of low-mass dark matter candidates. Following the realization of the first low-threshold cryogenic detector…
Magnomechanical devices, in which magnetic excitations couple to mechanical vibrations, have been discussed as efficient and broadband microwave signal transducers in the classical and quantum limit.…
