331 citations · 1.1k across the 9 of their papers we have counts for
9 papers
Observation of Chiral State Transfer Without Encircling an Exceptional Point
Hadiseh Nasari, Gisela Lopez-Galmiche, Helena E. Lopez-Aviles +7
The adiabatic theorem, a corollary of the Schrödinger equation, manifests itself in a profoundly different way in non-Hermitian arrangements, resulting in counterintuitive state tr…
Engineering Interaction Dynamics in Active Resonant Photonic Structures
Yuzhou G. N. Liu, Omid Hemmatyar, Absar U. Hassan +4
The collective response of a system is profoundly shaped by the interaction dynamics between its constituent elements. In physics, tailoring these interactions can enable the obser…
Thermodynamic theory of highly multimoded nonlinear optical systems
Fan O. Wu, Absar U. Hassan, Demetrios N. Christodoulides
The quest for ever higher information capacities has brought about a renaissance in multimode optical waveguide systems. This resurgence of interest has recently initiated a flurry…
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…
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…
Statistical PT-symmetric lasing in an optical fiber network
Ali K. Jahromi, Absar U. Hassan, Demetrios N. Christodoulides +1
PT-symmetry in optics is a condition whereby the real and imaginary parts of the refractive index across a photonic structure are deliberately balanced. This balance can lead to a…