Floquet theory of spin dynamics under circularly polarized light pulses

Abstract

Within the Floquet theory of periodically driven quantum systems, the nonlinear single-spin dynamics under pulse of a circularly polarized electromagnetic field is analyzed. It is demonstrated that the field, first, lifts the spin degeneracy and, second, the field-induced spin splitting is accompanied by the photon emission at the spitting frequency. This two-stage process leads, particularly, to the polarization of spins along angular momentum of the circularly polarized field. As a result, the pulse-induced magnetization appears, what can be observed in state-of the-art measurements.

Published version

References in corpus (6)

• Photovoltaic Hall effect in graphene
• Periodically-driven quantum systems: Effective Hamiltonians and engineered gauge fields
• Irradiated graphene as a tunable Floquet topological insulator
• Multiterminal Conductance of a Floquet Topological Insulator
• All-optical band engineering of gapped Dirac materials
• Floquet interface states in illuminated three-dimensional topological insulators

Cited by in corpus (7)

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• Anomalous radiation reaction in a circularly polarized field
• Optically induced delocalization of electrons bound by attractive potentials
• Elementary excitations in the hybrid Bose-Fermi system induced by circularly polarized light in a two-dimensional gas of charge carriers with different masses