842 citations · 1.8k across the 12 of their papers we have counts for
3 papers · 1 filter
Fermionic time-reversal symmetry in a photonic topological insulator
Lukas J. Maczewsky, Bastian Höckendorf, Mark Kremer +5
Much of the recent enthusiasm directed towards topological insulators as a new state of matter is motivated by their hallmark feature of protected chiral edge states. In fermionic…
Demonstration of a two-dimensional PT-symmetric crystal: Bulk dynamics, topology, and edge states
Mark Kremer, Tobias Biesenthal, Matthias Heinrich +2
In 1998, Carl Bender challenged the perceived wisdom of quantum mechanics that the Hamiltonian operator describing any quantum mechanical system has to be Hermitian. He showed that…
Non-quantized square-root topological insulators: a realization in photonic Aharonov-Bohm cages
Mark Kremer, Ioannis Petrides, Eric Meyer +3
Topological Insulators are a novel state of matter where spectral bands are characterized by quantized topological invariants. This unique quantized non-local property commonly man…