Nonadiabatic Nonlinear Optics and Quantum Geometry -- Application to the Twisted Schwinger Effect

Abstract

We study the tunneling mechanism of nonlinear optical processes in solids induced by strong coherent laser fields. The theory is based on an extension of the Landau-Zener model with nonadiabatic geometric effects. In addition to the rectification effect known previously, we find two effects, namely perfect tunneling and counterdiabaticity at fast sweep speed. We apply this theory to the twisted Schwinger effect, i.e., nonadiabatic pair production of particles by rotating electric fields, and find a nonperturbative generation mechanism of the opto-valley polarization and photo-current in Dirac and Weyl fermions.

24 pages, Accepted by SciPost

References in corpus (9)

• Valley polarization in MoS2 monolayers by optical pumping
• Valley filter and valley valve in graphene
• Photovoltaic Hall effect in graphene
• Valley Dependent Optoelectronics from Inversion Symmetry Breaking
• Dynamically assisted Schwinger mechanism
• Photocurrents in Weyl semimetals
• Microscopic theory for the light-induced anomalous Hall effect in graphene
• Adiabatic Condition and Quantum Geometric Potential
• Nonperturbative Topological Current in Weyl and Dirac Semimetals in Laser Fields

Cited by in corpus (15)

• Geometric aspects of nonlinear and nonequilibrium phenomena
• Tunneling spin current in a system with spin degeneracy
• Floquet engineering of electric polarization with two-frequency drive
• Estimation of electric field in intermediate-energy heavy-ion collisions
• High harmonic generation from electrons moving in topological spin textures
• Unexpected linear conductivity in Landau-Zener model: limitations and improvements of the relaxation time approximation in the quantum master equation
• Exact WKB analysis for adiabatic discrete-level Hamiltonians
• Demonstration of geometric diabatic control of quantum states
• Berry connection and quantum geometry in time-dependent systems with instantaneous quantum integrable field theory
• Multi-tunneling effect of nonreciprocal Landau-Zener tunneling: Insights from DC field responses
• Problem of nonlinear conductivity within relaxation time approximation in noncentrosymmetric insulators
• Singular connection approach to topological phases and resonant optical responses
• Riemannian geometric classification and emergent phenomena of magnetic textures
• Geometric Effects on Tunneling in Driven Quantum Systems
• Unified theory of the photovoltaic Hall effect by field- and light-induced Berry curvatures