Laser pulse driven nonequilibrium dynamics in the Kondo lattice model*

Experimental advances in nonlinear optics and ultrafast spectroscopy allow for unprecedented access to nonequilibrium physics of strongly correlated materials. By using this approach, many new and exciting phenomena have been discovered in recent years. They include light-induced superconductivity, the generation of Higgs oscillations, and the dynamical coupling of ferroelectric and ferromagnetic order. Heavy fermion systems are one prototypical class of strongly correlated materials. The interplay between localized magnetic moments and conduction electrons are the driver behind unconventional superconductivity and quantum criticality. The Kondo lattice model is used to describe the emergent phenomena of such systems. By using the powerful time-dependent variational Monte Carlo method, we investigate the nonequilibrium dynamics of the model after strong laser excitation. We demonstrate that the spin and charge fluctuations can be manipulated by varying shape and intensity of the laser pulse in different regimes of electron filling factor. In addition, experimentally measurable quantities are calculated to manifest the dynamics.