1.8k citations · 7.3k across the 88 of their papers we have counts for
7 papers · 1 filter
Adiabatic preparation of fractional Chern insulators from an effective thin-torus limit
Benjamin Michen, Cécile Repellin, Jan Carl Budich
We explore the quasi one-dimensional (thin torus, or TT) limit of fractional Chern insulators (FCIs) as a starting point for their adiabatic preparation in quantum simulators. Our…
Braid Protected Topological Band Structures with Unpaired Exceptional Points
J. Lukas K. König, Kang Yang, Jan Carl Budich +1
We demonstrate the existence of topologically stable unpaired exceptional points (EPs), and construct simple non-Hermitian (NH) tight-binding models exemplifying such remarkable no…
Spontaneous Formation of Exceptional Points at the Onset of Magnetism
Lorenzo Crippa, Giorgio Sangiovanni, Jan Carl Budich
We reveal how symmetry protected nodal points in topological semimetals may be promoted to pairs of generically stable exceptional points (EPs) by symmetry-breaking fluctuations at…
Quench-Probe Setup as Analyzer of Fractionalized Entanglement Spreading
Nicolas P. Bauer, Jan Carl Budich, Björn Trauzettel +1
We propose a novel spatially inhomogeneous setup for revealing quench-induced fractionalized excitations in entanglement dynamics. In this quench-probe setting, the region undergoi…
Symmetry protected exceptional points of interacting fermions
Robin Schäfer, Jan C. Budich, David J. Luitz
Non-hermitian quantum systems can exhibit spectral degeneracies known as exceptional points, where two or more eigenvectors coalesce, leading to a non-diagonalizable Jordan block.…
Topological Burning Glass Effect
Simon Körber, Lorenzo Privitera, Jan Carl Budich +1
We reveal a topological burning glass effect, where the local response of a system exhibits a topological quantization that is enhanced by an integer due to its environmental coupl…