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.

8 pages, 1 figure, to be published in PRB

References in corpus (12)

• Single-shot read-out of an individual electron spin in a quantum dot
• Driven coherent oscillations of a single electron spin in a quantum dot
• Driven quantum transport on the nanoscale
• Orbital mechanisms of electron spin manipulation by an electric field
• Electric Dipole Induced Spin Resonance in Disordered Semiconductors
• Hot-electron effect in spin dephasing in $n$-type GaAs quantum wells
• Geometrical spin dephasing in quantum dots
• Hole spin relaxation in semiconductor quantum dots
• Anisotropy of spin splitting and spin relaxation in lateral quantum dots
• Coherence control for qubits
• Tunable few electron quantum dots in InAs nanowires
• Intense terahertz laser fields on a quantum dot with Rashba spin-orbit coupling

Cited by in corpus (6)

• 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
• 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
• Intense terahertz laser fields on a two-dimensional hole gas with Rashba spin-orbit coupling