2 papers
quant-ph2026
Lewis-Ermakov approach for the time-dependent two-level system
M. Huerta-Sandoval, I. Ramos-Prieto, H. M. Moya-Cessa
We construct an explicit Lewis-Ermakov-type dynamical invariant for time-dependent two-level systems by exploiting their algebraic correspondence with the time-dependent harmonic o…
physics.optics2025
Unitary transformation approach to the paraxial wave equation
M. Huerta-Sandoval, K. Uriostegui, I. Ramos-Prieto +2
We present a framework for the paraxial wave equation based on propagation-dependent unitary transformations closely related to the Lewis-Ermakov invariant. This approach establish…