320 citations · 555 across the 12 of their papers we have counts for
7 papers · 1 filter
Localization and topological signatures under periodic twisting
James Walkling, Antonio Štrkalj, F. Nur Ünal
We theoretically explore a dynamical generalization of the Aubry-André model in two dimensions formed by superimposing two square-lattice potentials. Motivated by the rich physics…
Non-periodic Boundary Conditions for Euler Class and Dynamical Signatures of Obstruction
Osama A. Alsaiari, Adrien Bouhon, Robert-Jan Slager +1
While the landscape of free-fermion phases has drastically been expanded in the last decades, recently novel multi-gap topological phases were proposed where groups of bands can ac…
Nested-sphere description of the N-level Chern number and the generalized Bloch hypersphere
Cameron J. D. Kemp, Nigel R. Cooper, F. Nur Ünal
The geometric interpretation of (pseudo)spin 1/2 systems on the Bloch sphere has been appreciated across different areas ranging from condensed matter to quantum information and hi…
Topological Euler class as a dynamical observable in optical lattices
F. Nur Ünal, Adrien Bouhon, Robert-Jan Slager
The last years have witnessed rapid progress in the topological characterization of out-of-equilibrium systems. We report on robust signatures of a new type of topology -- the Eule…
Realization of an anomalous Floquet topological system with ultracold atoms
Karen Wintersperger, Christoph Braun, F. Nur Ünal +5
Coherent control via periodic modulation, also known as Floquet engineering, has emerged as a powerful experimental method for the realization of novel quantum systems with exotic…
Evolution of the Hofstadter butterfly in a tunable optical lattice
F. Yılmaz, F. Nur Ünal, M. Ö. Oktel
Recent advances in realizing artificial gauge fields on optical lattices promise experimental detection of topologically non-trivial energy spectra. Self-similar fractal energy str…