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cond-mat.mes-hall2025
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…
cond-mat.mtrl-sci2025
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…