Rudolf Gross conducts research in the field of quantum matter and solid-state quantum systems. He is particularly interested in quantum phenomena in superconducting and magnetic materials. He also
We investigate a nonadiabatic holonomic operation that enables us to entangle two fixed-frequency superconducting transmon qubits attached to a common bus resonator. Two coherent microwave tones are
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
Transition metal oxides are of great interest due to their various physical properties (e.g. high temperature superconductivity, colossal magnetoresistance, ferroelectricity, nonlinear optical
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
This thesis reports the study of experimental optimal control of superconducting qubits. Common approaches of optimal control utilize numerical models to optimize control shapes that implement
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
Geometric phases, which accompany the evolution of a quantum system and depend only on its trajectory in state space, are commonly studied in two-level systems. Here, however, we study the adiabatic
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
Walther-Meißner-Seminar SS 2023
Seminar Program SS 2023
Time: Friday, 11.15 h Place: Seminar Room 143,
Colloquium on Solid State Physics SS2023
Summer Semester 2023
Time: Thursday, 17.15 h Place: Lecture Hall 3, Department of Physics,
Seminar Program SS 2023
Time: Friday, 11.15 h Place: Seminar Room 143, Walther-Meißner-Institute,
Summer Semester 2023
Time: Thursday, 17.15 h Place: Lecture Hall 3, Department of Physics, James-Franck-Str. 1, D-85748 Garching
Dr. Matthias Mergenthaler - IBM Research - Zurich
Effects of surface treatments and UHV packaging on flux tunable transmon qubits
The last two decades have seen significant advances in the
Within the seminar, students give talks on current topics in condensed matter physics. The seminar aims to give a closer look at new developments in condensed matter physics and to show how these
Effects of surface treatments and UHV packaging on flux tunable transmon qubits
The last two decades have seen significant advances in the coherence times of superconducting qubits. However, further
Within the seminar, students give talks on current topics in condensed matter physics. The seminar aims to give a closer look at new developments in condensed matter physics and to show how these
We study the foundations of quantum key distribution and cryptography in the microwave domain by exploiting superconducting quantum circuits.
| 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.
Content
Within the seminar Superconducting Quantum Circuits, students present state-of-the-art developments in modern quantum technology with superconducting quantum circuits. In this field,
The field of quantum communication promises to provide efficient and unconditionally secure ways to exchange information, particularly, in the form of quantum states. Meanwhile, recent breakthroughs
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
Basic Research: quantum phenomena and quantum coherence in solid state systems, quantum microwaves superconductivity and superfluidity, cuprates, pnictides and organic superconductors,
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
Microwave signals at the single photon level are used to manipulate and read-out quantum devices at ultra-low temperatures and for quantum communication.
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.
Microwave quantum networks are expected to play an important role for interlinking different quantum technology platforms operating in the microwave regime. We study the foundations of
