26 citations · 87 across the 9 of their papers we have counts for
9 papers
Time-dependent Berry curvature and quantum metric of Floquet-Bloch states
S. Sajad Dabiri, Reza Asgari
The quantum geometry of Bloch bands, characterized by the Berry curvature and the quantum metric, underpins a wide range of linear and nonlinear responses in static systems. Here,…
Nonlinear Optical Response in Pseudo-Hermitian Systems at Steady State
S. Sajad Dabiri, Reza Asgari
We establish a steady-state theory for nonlinear optical conductivity in pseudo-Hermitian systems. We derive compact formulas for the first and second order conductivity tensors in…
Velocity gauge formulation of nonlinear optical response in Floquet-driven systems
S. Sajad Dabiri, Reza Asgari
Using the velocity gauge formalism, we develop a theoretical framework for computing the nonlinear optical responses of time-periodic quantum systems. This approach complements the…
Dynamical nonlinear optical response in time-periodic quantum systems
S. Sajad Dabiri, Reza Asgari
We present a comprehensive theoretical framework for calculating the linear and nonlinear optical responses of time-periodic quantum systems. Using density matrix evolution in the…
Modulating dichroism and optical conductivity in bilayer graphene under intense electromagnetic field irradiation
S. Sajad Dabiri, Hosein Cheraghchi, Fatemeh Adinehvand +1
This study explores the impact of a strong perpendicular laser field on the electronic structure and optical conductivity of bilayer graphene. Employing the Floquet-Bloch theorem a…
Electric Circuit Simulation of Floquet Topological Insulators
S. Sajad Dabiri, H. Cheraghchi
We present a method for simulating any non-interacting and time-periodic tight-binding Hamiltonian in Fourier space using electric circuits made of inductors and capacitors. We fir…
Floquet states and optical conductivity of an irradiated two dimensional topological insulator
S. Sajad Dabiri, H. Cheraghchi, A. Sadeghi
We study the topology of the Floquet states and time-averaged optical conductivity of the lattice model of a thin topological insulator subject to a circularly polarized light usin…
Light-induced topological phases in thin films of magnetically doped topological insulators
S. Sajad Dabiri, Hosein Cheraghchi, Ali Sadeghi
We study the photon-dressed electronic band structure of topological insulator thin films which could be also doped doped by magnetic impurities in response to an off-resonance tim…
Engineering of topological phases in driven thin topological insulator: Structure inversion asymmetry effect
S. Sajad Dabiri, Hosein Cheraghchi
We investigate the effect of a high frequency electromagnetic field with both of circularly and linearly polarization, on the emergence of quantum phases on thin topological insula…