3 papers
physics.app-ph2021
Enhanced Sensitivity of Degenerate System Made of Two Unstable Resonators Coupled by Gyrator Operating at an Exceptional Point
Kasra Rouhi, Alireza Nikzamir, Alexander Figotin +1
We demonstrate that a circuit comprising two unstable LC resonators coupled via a gyrator supports an exceptional point of degeneracy (EPD) with purely real eigenfrequency. Each of…
physics.app-ph2021
Exceptional Degeneracies in Traveling Wave Tubes with Dispersive Slow-Wave Structure Including Space-Charge Effect
Kasra Rouhi, Robert Marosi, Tarek Mealy +3
The interaction between a linear electron beam and a guided electromagnetic wave is studied in the contest of exceptional points of degeneracy (EPD) supported by such an interactiv…
physics.app-ph2020
Exceptional Points of Degeneracy Directly Induced by Space-Time Modulation of a Single Transmission Line
Kasra Rouhi, Hamidreza Kazemi, Alexander Figotin +1
We demonstrate how exceptional points of degeneracy (EPDs) are induced in a single transmission line (TL) directly by applying periodic space-time modulation to the per-unit-length…