Spin relaxation in an InAs quantum dot in the presence of terahertz driving fields

Abstract

The spin relaxation in a 1D InAs quantum dot with the Rashba spin-orbit coupling under driving THz magnetic fields is investigated by developing the kinetic equation with the help of the Floquet-Markov theory, which is generalized to the system with the spin-orbit coupling, to include both the strong driving field and the electron-phonon scattering. The spin relaxation time can be effectively prolonged or shortened by the terahertz magnetic field depending on the frequency and strength of the terahertz magnetic field. The effect can be understood as the sideband-modulated spin-phonon scattering. This offers an additional way to manipulate the spin relaxation time.

arXiv comment8 pages, 1 figure, to be published in PRB

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Cited by in corpus (10)

• Spin dynamics in semiconductors
• Optical response of graphene under intense terahertz fields
• Spin dynamics in a strongly driven system: very slow Rabi oscillations
• Reexamination of spin decoherence in semiconductor quantum dots from equation-of-motion approach
• Control of electron spin and orbital resonance in quantum dots through spin-orbit interactions
• Pulse-pumped double quantum dot with spin-orbit coupling
• Kinetics of spin coherence of electrons in $n$-type InAs quantum wells under intense terahertz laser fields
• Continuous third harmonic generation in a terahertz driven modulated nanowire
• Intense terahertz laser fields on a two-dimensional hole gas with Rashba spin-orbit coupling
• Nonperturbative model for optical response under intense periodic fields with application to graphene in a strong perpendicular magnetic field