123 citations · 145 across the 7 of their papers we have counts for
16 papers
Non-Hermitian Dynamics in Quantum Anomalous Hall Insulators
Le Yi, Emma Steinebronn, Asmaul Smitha Rashid +4
Magnetically doped topological insulators (TIs) exhibit two distinct phases: the quantum anomalous Hall (QAH) phase when the Fermi level resides within the surface gap, and a metal…
New perspective on chiral exceptional points with application to discrete photonics
A. Hashemi, S. M. Rezaei, S. K. Ozdemir +1
Chiral exceptional points (CEPs) have been shown to emerge in traveling wave resonators via asymmetric back scattering from two or more nano-scatterers. Here, we provide a new pers…
Experimental observation of PT symmetry breaking near divergent exceptional points
M. Sakhdari, M. Hajizadegan, Q. Zhong +3
Standard exceptional points (EPs) are non-Hermitian degeneracies that occur in open systems. At an EP, the Taylor series expansion becomes singular and fails to converge -- a featu…
Hierarchical construction of higher-order exceptional points
Q. Zhong, J. Kou, S. K. Ozdemir +1
The realization of higher-order exceptional points (HOEPs) can lead to orders of magnitude enhancement in light-matter interactions beyond the current fundamental limits. Unfortuna…
Control of spontaneous emission dynamics in microcavities with chiral exceptional surfaces
Q. Zhong, A. Hashemi, S. K. Ozdemir +1
We investigate spontaneous emission from a quantum emitter located within the mode volume of a microring resonator that features chiral exceptional points. We show that this config…
Coherent virtual absorption of light in microring resonators
Q. Zhong, L. Simonson, T. Kottos +1
Light trapping and radiation process from linear reciprocal photonic resonators is one of the fundamental processes in optical science and engineering. Recently, the concept of coh…