574 citations · 3.6k across the 50 of their papers we have counts for
4 papers · 1 filter
Chiral state-conversion without encircling an exceptional point
Absar U. Hassan, Gisela L. Galmiche, Gal Harari +4
Dynamically varying system parameters along a path enclosing an exceptional point is known to lead to chiral mode conversion. But is it necessary to include this non-Hermitian dege…
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…
Dynamically encircling exceptional points: Exact evolution and polarization state conversion
Absar U. Hassan, Bo Zhen, Marin Soljacic +2
We show that a two-level non-Hermitian Hamiltonian with constant off-diagonal exchange elements can be analyzed exactly when the underlying exceptional point is perfectly encircled…
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…