556 citations · 1.1k across the 4 of their papers we have counts for
4 papers
Direct generation of tunable orbital angular momentum beams in microring lasers with broadband exceptional points
William E. Hayenga, Jinhan Ren, Midya Parto +7
Non-Hermitian exceptional points (EPs) represent a special type of degeneracy where not only the eigenvalues coalesce, but also the eigenstates tend to collapse on each other. Rece…
Sensing with exceptional surfaces: combining sensitivity with robustness
Q. Zhong, J. Ren, M. Khajavikhan +3
Exceptional points (EPs) are singularities that arise in non-Hermitian physics. Current research efforts focus only on systems supporting isolated EPs characterized by increased se…
Complex Edge-State Phase Transitions in 1D Topological Laser Arrays
Midya Parto, Steffen Wittek, Hossein Hodaei +7
We report the first observation of lasing in topological edge states in a 1D Su-Schrieffer-Heeger active array of resonators. We show that in the presence of chiral-time ($\mathcal…
Ultrasensitive micro-scale parity-time-symmetric ring laser gyroscope
Jinhan Ren, Hossein Hodaei, Gal Harari +5
We propose a new scheme for ultra-sensitive laser gyroscopes that utilizes the physics of exceptional points. By exploiting the properties of such non-Hermitian degeneracies, we sh…