199 citations · 400 across the 12 of their papers we have counts for
12 papers
Circular Dichroism on the Edge of Quantum Hall Systems: From Many-Body Chern Number to Anisotropy Measurements
F. Nur Ünal, A. Nardin, N. Goldman
Quantum Hall states are characterized by a topological invariant, the many-body Chern number, which determines their quantized Hall conductivity. This invariant also emerges in cir…
Non-Abelian Hopf-Euler insulators
Wojciech J. Jankowski, Arthur S. Morris, Zory Davoyan +3
We discuss a class of three-band non-Abelian topological insulators in three dimensions that carry a single bulk Hopf index protected by spatiotemporal () inversion s…
Interferometry of non-Abelian band singularities and Euler class topology
Oliver Breach, Robert-Jan Slager, F. Nur Ünal
In systems with a real Bloch Hamiltonian band nodes can be characterised by a non-Abelian frame-rotation charge. The ability of these band nodes to annihilate pairwise is path depe…
Optical manifestations and bounds of topological Euler class
Wojciech J. Jankowski, Arthur S. Morris, Adrien Bouhon +2
We analyze quantum-geometric bounds on optical weights in topological phases with pairs of bands hosting nontrivial Euler class, a multigap invariant characterizing non-Abelian ban…
Individually tunable tunnelling coefficients in optical lattices using local periodic driving
Georgia M. Nixon, F. Nur Unal, Ulrich Schneider
Ultracold atoms in optical lattices have emerged as powerful quantum simulators of translationally invariant systems with many applications in e.g.\ strongly-correlated and topolog…
Wave packet dynamics and edge transport in anomalous Floquet topological phases
Miguel F. Martínez, F. Nur Ünal
The possibility of attaining chiral edge modes under periodic driving has spurred tremendous attention, both theoretically and experimentally, especially in light of anomalous Floq…
Floquet multi-gap topology: Non-Abelian braiding and anomalous Dirac string phase
Robert-Jan Slager, Adrien Bouhon, F. Nur Ünal
Topological phases of matter span a wide area of research shaping fundamental pursuits and offering promise for future applications. While a significant fraction of topological mat…
Robust and Ultrafast State Preparation by Ramping Artificial Gauge Potentials
Botao Wang, Xiao-Yu Dong, F. Nur Ünal +1
The implementation of static artificial magnetic fields in ultracold atomic systems has become a powerful tool, e.g. for simulating quantum-Hall physics with charge-neutral atoms.…
Measuring topology by dynamics: Chern number from linking number
Matthias Tarnowski, F. Nur Ünal, Nick Fläschner +4
Integer-valued topological indices, characterizing nonlocal properties of quantum states of matter, are known to directly predict robust physical properties of equilibrium systems.…
Non-equilibrium Fractional Hall Response After a Topological Quench
F. Nur Ünal, Erich J. Mueller, M. Ö. Oktel
We theoretically study the Hall response of a lattice system following a quench where the topology of a filled band is suddenly changed. In the limit where the physics is dominated…
Cooling Quantum Gases with Entropy Localization
F. Nur Ünal, Erich J. Mueller
We study the dynamics of entropy in a time dependent potential and explore how disorder influences this entropy flow. We show that disorder can trap entropy at the edge of the atom…
Pairing of Fermions with Unequal Effective Charges in an Artificial Magnetic Field
F. Nur Ünal, M. Ö. Oktel
Artificial magnetic fields (AMFs) created for ultra cold systems depend sensitively on the internal structure of the atoms. In a mixture, each component experiences a different AMF…