Dieter Andres was member of the Gross group at WMI as Ph.D. student between 2000 and 2005. Ph.D. Thesis: Effects of high magnetic fields and hydrostatic pressure on the low temperature density
Walther-Meißner-Seminar
Seminar Program SS 2024
Time: Friday, 11.15 h Place: Seminar Room 143,
Seminar Program SS 2024
Time: Friday, 11.15 h Place: Seminar Room 143, Walther-Meißner-Institute,
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
The content of the lecture includes the following topics:
- Basics properties of superconductors and superconducting materials (different types of superconducting materials, superconductors in a
The content of the lecture includes the following topics:
- Basics properties of superconductors and superconducting materials (different types of superconducting materials, superconductors in a
Quantum Computing with Superconducting Qubits: Basic Concepts (0000001346) S 2026
Exercise to Quantum Computing with Superconducting Qubits: Basic Concepts (0000001350) S 2026
WMI demonstrates a highly protected superconducting qubit as building block of a scalable quantum processor with strongly suppressed qubit coherence.
Exercise to Quantum Computing with Superconducting Qubits: Basic Concepts (0000001350) S 2026
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,
Research paper featured in "Physics": 'Niobium air bridges as low-loss components for superconducting quantum hardware' by Bruckmoser et al.
Benjamin Lienhard is a senior postdoctoral researcher at WMI, specializing in the efficient calibration, readout, and control of quantum processors. During his PhD at MIT, he conducted experiments
Spray deposition is a scalable and cost-effective technique for the fabrication of magnetic hybrid films containing diblock copolymers (DBCs) and magnetic nanoparticles. However, it is challenging to
Most commercial high-temperature superconducting coated conductors based on ion beam assisted MgO deposited templates use LaMnO3 (LMO) films as the terminating buffer layer. In contrast, coated
We have optimized the growth of superconducting TaN thin films on SiO2 substrates via dc magnetron sputtering and extract a maximum superconducting transition temperature of Tc = 5 K as well as a
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
Nano-electromechanical systems implement the opto-mechanical interaction combining electromagnetic circuits and mechanical elements. We investigate an inductively coupled nano-electromechanical
In this thesis, we investigate a strongly coupled spin-photon hybrid system consisting of a superconducting microwave resonator and a spin ensemble of phosphorus donors in 28Si. We study the dynamics
This thesis investigates three facets of nanomechanics: (i) dynamics in resonator networks, (ii) sensing applications and (iii) nano-electromechanics. These aspects allowed to explore and identify
In order to characterize and calibrate quantum processing devices, a large amount of measurement data has to be collected. Active qubit reset increases the speed at which data can be gathered but
We propose a tunable coupler consisting of N fixed-frequency qubits, which can tune and even amplify the effective interaction between two superconducting quantum circuits. The tuning range of the
We describe design, implementation and performance of an ultra-high vacuum (UHV) package for superconducting qubit chips or other surface sensitive quantum devices. The UHV loading procedure allows
We describe a unified classical approach for analyzing the scattering coefficients of superconducting microwave resonators with a variety of geometries. To fill the gap between experiment and theory,
One of the main limitations in state-of-the art solid-state quantum processors is qubit decoherence and relaxation due to noise from adsorbates on surfaces, impurities at interfaces, and material
A quantum memory has to meet the conflicting requirements of strong coupling for fast readout and weak coupling for long storage. Multimode rectangular superconducting 3D cavities are known to
Wireless power transfer (WPT) systems have emerged as a key technology for the future charging
infrastructure. Besides full system efficiency, the power densities of the transmission coils are key
In circuit-based quantum computing the available gate set typically consists of single-qubit gates acting on each individual qubit and at least one entangling gate between pairs of qubits. In certain
We systematically study the performance of compact lumped element planar microwave Nb70Ti30N (NbTiN) resonators operating at 5 GHz in external in-plane magnetic fields up to 440 mT, a broad
