4 papers
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…