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Simulating Exceptional Non-Hermitian Metals with Single-Photon Interferometry
Kunkun Wang, Lei Xiao, Jan Carl Budich +2
We experimentally simulate in a photonic setting non-Hermitian (NH) metals characterized by the topological properties of their nodal band structures. Implementing nonunitary time…
Non-Hermitian Topological Sensors
Jan Carl Budich, Emil J. Bergholtz
We introduce and study a novel class of sensors whose sensitivity grows exponentially with the size of the device. Remarkably, this drastic enhancement does not rely on any fine-tu…
Signatures of topology in quantum quench dynamics and their interrelation
Lorenzo Pastori, Simone Barbarino, Jan Carl Budich
Motivated by recent experimental progress in the study of quantum systems far from equilibrium, we investigate the relation between several dynamical signatures of topology in the…
Interacting topological frequency converter
Simon Körber, Lorenzo Privitera, Jan Carl Budich +1
We show that an interacting two-spin model subjected to two circularly polarized drives enables a feasible realization of a correlated topological phase in synthetic dimensions. Th…
Correlation-Assisted Quantized Charge Pumping
Jacob Marks, Michael Schüler, Jan C. Budich +1
We investigate charge pumping in the vicinity of order-obstructed topological phases, i.e. symmetry protected topological phases masked by spontaneous symmetry breaking in the pres…