Technische Universität München
Lehrstuhl für Theorie der kondensierten Materie (Prof. Pollmann)
James-Franck-Str. 1
85748 Garching b. München
Wir sind an einer Vielzahl von Problemen in der Theorie der kondensierten Materie interessiert. Unser Schwerpunkt liegt auf der Untersuchung von Phänomenen, die durch quantenmechanische Effekte in Systemen korrelierter Elektronen entstehen. Zu den Forschungsgebieten gehören die Untersuchung topologischer Phasen der Materie, geometrisch frustrierte Systeme, die Dynamik in Quanten-Vielteilchensystemen und die Anwendung von Quanteninformationskonzepten.
Nature
Abstract: Digital quantum matter—realized when discrete quantum gates approximate continuous time evolution—is susceptible to heating into chaotic, structureless states1. If digitization errors are adequately…
Physical Review B
Abstract: Isometric tensor network states (isoTNS) generalize the isometric form of the one-dimensional matrix product states to tensor networks in two and higher dimensions. Here, we introduce an alternative…
Physical Review B
Abstract: Motivated by recent experiments, we investigate the spin-2 1 XXZ model on the triangular lattice with strong Ising anisotropy, combining large-scale numerical simulations and analytical methods to…
Quantum
Abstract: In unitary circuit games, two competing parties—an “entangler” and a “disentangler”—can induce an entanglement phase transition in a quantum many-body system. The transition occurs at a certain rate…
Physical Review B
Abstract: An important result in the theory of quantum control is the “universality” of 2-local unitary gates, i.e., the fact that any global unitary evolution of a system of L qudits can be implemented by…
Nature Reviews Physics
Abstract: It is an ongoing quest to realize topologically ordered quantum states on different platforms including condensed matter systems, quantum simulators and digital quantum processors. Unlike conventional…
Nature
Abstract: Out-of-equilibrium phases in many-body systems constitute a new paradigm in quantum matter—they exhibit dynamical properties that may otherwise be forbidden by equilibrium thermodynamics. Among these…
Physical Review Research
Abstract: The simulation of quantum many-body systems, relevant for quantum chemistry and condensed matter physics, is one of the most promising applications of near-term quantum computers before…
Physical Review B
Abstract: Continuous symmetries lead to universal slow relaxation of correlation functions in quantum many-body systems. In this work, we study how local symmetry-breaking impurities affect the dynamics of…
Physical Review B
Abstract: Topologically ordered phases exhibit further complexity in the presence of global symmetries: Their anyonic excitations may exhibit different transformation patterns under these symmetries, leading to…
