Topological resonance in Weyl semimetals in circularly-polarized optical pulse

Abstract

We study theoretically the ultrafast electron dynamics of three-dimensional Weyl semimetals in the field of a laser pulse. For a circularly-polarized pulse, such dynamics is governed by topological resonance, which manifests itself as a specific conduction band population distribution in the vicinity of the Weyl points. The topological resonance is determined by the competition between the topological phase and the dynamic phase and depends on the handedness of a circularly polarized pulse. Also, we show that the conduction band population induced by a circularly-polarized pulse that consists of two oscillations with opposite handedness is highly chiral, which represents the intrinsic chirality of the Weyl points.

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Cited by in corpus (6)

• High-harmonic spectroscopy of light-driven nonlinear anisotropic anomalous Hall effect in a Weyl semimetal
• Role of topological charges in the nonlinear-optical response from Weyl semimetals
• Valley polarization control in WSe2 monolayer by a single-cycle laser pulse
• Subcycle control of valley-selective excitation via dynamical Franz-Keldysh effect in WSe${}_2$ monolayer
• Ultrafast valley polarization in bilayer graphene
• Three-level Spaser System: a Semi-Classical Analysis