73 citations · 127 across the 8 of their papers we have counts for
8 papers
Experimental identification of the second-order non-Hermitian skin effect with physics-graph-informed machine learning
Ce Shang, Shuo Liu, Ruiwen Shao +11
Topological phases of matter are conventionally characterized by the bulk-boundary correspondence in Hermitian systems: The topological invariant of the bulk in dimensions corr…
Second-order topological insulator and fragile topology in topological circuitry simulation
Ce Shang, Xiaoning Zang, Wenlong Gao +2
Second-order topological insulators (SOTIs) are the topological phases of matter in d dimensions that manifest (d-2)-dimensional localized modes at the intersection of the edges. W…
Identification and Resolution of Unphysical Multielectron Excitations in the Real-Time Time-Dependent Kohn-Sham Formulation
Xiaoning Zang, Udo Schwingenschlogl, Mark T. Lusk
We resolve a fundamental issue associated with the conventional Kohn-Sham formulation of real-time time-dependent density functional theory. We show that unphysical multielectron e…
Artificial gauge fields and topological insulators in Moire superlattices
Ce Shang, Adel Abbout, Xiaoning Zang +2
We propose an innovative quantum emulator based on Moire superlattices showing that, by employing periodical modulation on each lattice site, one can create tunable, artificial gau…
Angular momentum transport with twisted exciton wave packets
Xiaoning Zang, Mark T. Lusk
A chain of cofacial molecules with CN or CNh symmetry supports excitonic states with a screw-like structure. These can be quantified with the combination of an axial wavenumber and…
Twisted Molecular Excitons as Mediators for Changing the Angular Momentum of Light
Xiaoning Zang, Mark T. Lusk
Molecules with C_N or C_Nh symmetry can absorb quanta of optical angular momentum to generate twisted excitons with well-defined quasi-angular momenta of their own. Angular momentu…
Engineering and Manipulating Exciton Wave Packets
Xiaoning Zang, Simone Montangero, Lincoln D. Carr +1
When a semiconductor absorbs light, the resulting electron-hole superposition amounts to a uncontrolled quantum ripple that eventually degenerates into diffusion. If the conformati…
Designing Small Silicon Quantum Dots with Low Reorganization Energy
Xiaoning Zang, Mark T. Lusk
A first principles, excited state analysis is carried out to identify ways of producing silicon quantum dots with low excitonic reorganization energy. These focus on the general st…