65 citations · 208 across the 5 of their papers we have counts for
5 papers
Anomalous wave-packet transport on boundaries of Floquet topological systems
Xin-Xin Yang, Kai-Ye Shi, F. Nur Ünal +1
A two-dimensional periodically driven (Floquet) system with zero winding number in the absence of time-reversal symmetry is usually considered topologically trivial. Here, we study…
Hopf characterization of two-dimensional Floquet topological insulators
F. Nur Ünal, André Eckardt, Robert-Jan Slager
We present a topological characterization of time-periodically driven two-band models in 2+1 dimensions as Hopf insulators. The intrinsic periodicity of the Floquet system with res…
How to Directly Measure Floquet Topological Invariants in Optical Lattices
F. Nur Ünal, Babak Seradjeh, André Eckardt
The classification of topological Floquet systems with time-periodic Hamiltonians transcends that of static systems. For example, spinless fermions in periodically driven two-dimen…
Creating, probing, and manipulating fractionally charged excitations of fractional Chern insulators in optical lattices
Mantas Račiūnas, F. Nur Ünal, Egidijus Anisimovas +1
We propose a set of schemes to create and probe fractionally charged excitations of a fractional Chern insulator state in an optical lattice. This includes the creation of localize…
Floquet engineering of optical solenoids and quantized charge pumping along tailored paths in two-dimensional Chern insulators
Botao Wang, F. Nur Ünal, André Eckardt
The insertion of a local magnetic flux, as the one created by a thin solenoid, plays an important role in gedanken experiments of quantum Hall physics. By combining Floquet enginee…