32 citations · 73 across the 11 of their papers we have counts for
11 papers
Grid-state deformation in a no-jump non-Hermitian bosonic dimer
B. M. Rodriguez-Lara, H. Ghaemi-Dizicheh, S. Dehdashti +3
We study the no-jump evolution of ideal grid states in a lossy bosonic dimer with differential decay. The effective non-Hermitian quadratic dynamics induces a complex symplectic fl…
Non-Hermitian three-mode couplers
B. M. Rodriguez-Lara, H. Ghaemi-Dizicheh, S. Dehdashti +3
Photonic systems with exceptional points, where eigenvalues and corresponding eigenstates coalesce, have attracted interest due to their topological features and enhanced sensitivi…
Higher-order exceptional points in a non-reciprocal waveguide beam splitter
Hamed Ghaemi-Dizicheh, Shahram Dehdashti, Andreas Hanke +2
Non-Hermitian systems have attracted significant interest because of their intriguing and useful properties, including exceptional points (EPs), where eigenvalues and the correspon…
A class of stable nonlinear non-Hermitian skin modes
Hamed Ghaemi-Dizicheh
The non-Hermitian skin effect (NHSE) is a well-known phenomenon in open topological systems that causes a large number of eigenstates to become localized at the boundary. Although…
Transport effects in non-Hermitian nonreciprocal systems: General approach
Hamed Ghaemi-Dizicheh
In this paper, we present a unifying analytical framework for identifying conditions for transport effects such as reflectionless and transparent transport, lasing, and coherent pe…
Non-Hermitian Floquet-Free Analytically Solvable Time Dependant Systems
Hamed Ghaemi-Dizicheh, Hamidreza Ramezani
The non-Hermitian models, which are symmetric under parity (P) and time-reversal (T) operators, are the cornerstone for the fabrication of new ultra-sensitive optoelectronic device…
Asymmetric Localization by Second Harmonic Generation
H. Ghaemi-Dizicheh, A. Targholizadeh, B. Feng +1
We introduce a nonlinear photonic system that enables asymmetric localization and unidirectional transfer of an electromagnetic wave through the second harmonic generation process.…
Compatibility of transport effects in non-Hermitian nonreciprocal systems
Hamed Ghaemi-Dizicheh, Henning Schomerus
Based on a general transport theory for non-reciprocal non-Hermitian systems and a topological model that encompasses a wide range of previously studied models, we (i) provide cond…
Spectral singularities and tunable slab lasers with 2D material coating
Hamed Ghaemi-Dizicheh, Ali Mostafazadeh, Mustafa Sarisaman
We investigate linear and nonlinear spectral singularities in the transverse electric and transverse magnetic modes of a slab laser consisting of an active planar slab sandwiched b…
Blowing up Light: A nonlinear amplification scheme for electromagnetic waves
Ali Mostafazadeh, Hamed Ghaemi-Dizicheh, Sasan Hajizadeh
We use blow-up solutions of nonlinear Helmholtz equations to introduce a nonlinear resonance effect that is capable of amplifying electromagnetic waves of particular intensity. To…
Nonlinear Spectral Singularities and Laser Output Intensity
Hamed Ghaemi-Dizicheh, Ali Mostafazadeh, Mustafa Sarisaman
The mathematical notion of spectral singularity admits a description in terms of purely outgoing solutions of a corresponding linear wave equation. This leads to a nonlinear genera…