112 citations · 245 across the 7 of their papers we have counts for
9 papers
Contact-free charge carrier density determination of doped sub-μm thin cubic GaN layers with terahertz time-domain spectroscopy
Joshua Hennig, Mario F. Zscherp, Silas A. Jentsch +11
As cubic GaN is a promising material for optoelectronic applications, its layers need to be precisely doped to realize the desired properties. While contact-based methods are estab…
Time-resolved topology of aperiodically driven systems
Justin T. Cole, Christina Jörg, Terry A. Loring +1
Topological phases of periodically driven systems are commonly classified through Floquet Hamiltonians, whose definition relies on a repeated driving cycle. However, this framework…
Optical control of topological end states via soliton formation in a 1D lattice
Christina Jörg, Marius Jürgensen, Sebabrata Mukherjee +1
Solitons are self-consistent solutions of the nonlinear Schrödinger equation that maintain their shape during propagation. Here we show, using a pump-probe technique, that soliton…
Quantum inspired image augmentation applicable to waveguides and optical image transfer via Anderson Localization
Nikolaos E. Palaiodimopoulos, Vitor Fortes Rey, Matthias Tschöpe +3
We present a quantum inspired image augmentation protocol which is applicable to classical images and, in principle, due to its known quantum formulation applicable to quantum syst…
Quantized Fractional Thouless Pumping of Solitons
Marius Jürgensen, Sebabrata Mukherjee, Christina Jörg +1
In many contexts, the interaction between particles gives rise to emergent and perhaps unanticipated physical phenomena. An example is the fractional quantum Hall effect, where int…
Observation of Quadratic (Charge-2) Weyl Point Splitting in Near-Infrared Photonic Crystals
Christina Jörg, Sachin Vaidya, Jiho Noh +4
Weyl points are point degeneracies that occur in momentum space of periodic materials, and are associated with a quantized topological charge. We experimentally observe in a 3D mic…
Existence of a negative next-nearest-neighbor coupling in evanescently coupled dielectric waveguides
Julian Schulz, Christina Jörg, Georg von Freymann
We experimentally demonstrate that the next-nearest-neighbor(NNN)coupling in an array of waveguides can naturally be negative. To do so, dielectric zig-zag shaped waveguide arrays…
Observation of bound states in the continuum embedded in symmetry bandgaps
Alexander Cerjan, Christina Jörg, Sachin Vaidya +5
In the last decade, symmetry-protected bound states in the continuum (BICs) have proven to be an important design principle for creating and enhancing devices reliant upon states w…
Dynamic defects in photonic Floquet topological insulators
Christina Jörg, Fabian Letscher, Michael Fleischhauer +1
Edge modes in topological insulators are known to be robust against defects. We investigate if this also holds true when the defect is not static, but varies in time. We study the…