56 citations · 185 across the 9 of their papers we have counts for
9 papers
Non-hermitian topology in multiterminal superconducting junctions
David Christian Ohnmacht, Valentin Wilhelm, Hannes Weisbrich +1
Recent experimental advancements in dissipation control have yielded significant insights into non-hermitian Hamiltonians for open quantum systems. Of particular interest are the t…
Ground state topology of a four-terminal superconducting double quantum dot
Lev Teshler, Hannes Weisbrich, Jonathan Sturm +3
In recent years, various classes of systems were proposed to realize topological states of matter. One of them are multiterminal Josephson junctions where topological Andreev bound…
Phase-engineering the Andreev band structure of a three-terminal Josephson junction
M. Coraiola, D. Z. Haxell, D. Sabonis +11
In hybrid Josephson junctions with three or more superconducting terminals coupled to a semiconducting region, Andreev bound states may form unconventional energy band structures,…
Fractional transconductance via non-adiabatic topological Cooper pair pumping
Hannes Weisbrich, Raffael L. Klees, Oded Zilberberg +1
Many robust physical phenomena in quantum physics are based on topological invariants arising due to intriguing geometrical properties of quantum states. Prime examples are the int…
Tensor Monopoles in superconducting systems
H. Weisbrich, M. Bestler, W. Belzig
Topology in general but also topological objects such as monopoles are a central concept in physics. They are prime examples for the intriguing physics of gauge theories and topolo…
Geometrical Rabi oscillations and Landau-Zener transitions in non-Abelian systems
Hannes Weisbrich, Gianluca Rastelli, Wolfgang Belzig
Topological phases of matter became a new standard to classify quantum systems in many cases, yet key quantities like the quantum geometric tensor providing local information about…
Second Chern Number and Non-Abelian Berry Phase in Topological Superconducting Systems
H. Weisbrich, R. L. Klees, G. Rastelli +1
Topology ultimately unveils the roots of the perfect quantization observed in complex systems. The 2D quantum Hall effect is the celebrated archetype. Remarkably, topology can mani…
Decoherence and relaxation of topological states in extended quantum Ising models
Hannes Weisbrich, Wolfgang Belzig, Gianluca Rastelli
We study the decoherence and the relaxation dynamics of topological states in an extended class of quantum Ising chains which can present a manyfold ground state subspace. The lead…
Decoherence in the quantum Ising model with transverse dissipative interaction in the strong coupling regime
Hannes Weisbrich, C. Saussol, Wolfgang Belzig +1
We study the decoherence dynamics of a quantum Ising lattice of finite size with a transverse dissipative interaction, namely the coupling with the bath is assumed perpendicular to…