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Dissipative preparation of fractional Chern insulators
Zhao Liu, Emil J. Bergholtz, Jan Carl Budich
We report on the numerically exact simulation of the dissipative dynamics governed by quantum master equations that feature fractional quantum Hall states as unique steady states.…
Transition from metal to higher-order topological insulator driven by random flux
Chang-An Li, Song-Bo Zhang, Jan Carl Budich +1
Random flux is commonly believed to be incapable of driving full metal-insulator transitions in non-interacting systems. Here we show that random flux can after all induce a full m…
Fourth-Order Exceptional Points in Correlated Quantum Many-Body Systems
Lorenzo Crippa, Jan Carl Budich, Giorgio Sangiovanni
Non-Hermtian (NH) Hamiltonians effectively describing the physics of dissipative systems have become an important tool with applications ranging from classical meta-materials to qu…
Quantum Non-Hermitian Topological Sensors
Florian Koch, Jan Carl Budich
We investigate in the framework of quantum noise theory how the striking boundary-sensitivity recently discovered in the context of non-Hermitian (NH) topological phases may be har…
Dynamically Induced Exceptional Phases in Quenched Interacting Semimetals
Carl Lehmann, Michael Schüler, Jan Carl Budich
We report on the dynamical formation of exceptional degeneracies in basic correlation functions of non-integrable one- and two-dimensional systems quenched to the vicinity of a cri…
Exceptional Non-Hermitian Phases in Disordered Quantum Wires
Benjamin Michen, Tommaso Micallo, Jan Carl Budich
We demonstrate the occurrence of nodal non-Hermitian (NH) phases featuring exceptional degeneracies in chiral-symmetric disordered quantum wires, where NH physics naturally arises…