Theory of the time-resolved Kerr rotation on trapped holes

Abstract

We formulate a model of the time-resolved Kerr rotation experiment on a single hole in a semiconductor nanostructure (e.g., a quantum dot) or on an ensemble of trapped holes (e.g., in a quantum well) in a tilted magnetic field. We use a generic Markovian description of the hole and trion dephasing and focus on the interpretation of the time-resolved signal in terms of the microscopic evolution of the spin polarization. We show that the signal in an off-plane field contains components that reveal both the spin relaxation rate and the spin coherence dephasing rate. We derive analytical formulas for the hole spin polarization, which may be used to extract the two relevant rates by fitting to the measurement data.

13 pages, 7 figures

References in corpus (12)

• Measurement of Rashba and Dresselhaus spin-orbit magnetic fields
• Spin relaxation and decoherence of holes in quantum dots
• Stimulated and spontaneous optical generation of electron spin coherence in charged GaAs quantum dots
• Observation of Faraday rotation from a single confined spin
• Observation of extremely slow hole spin relaxation in self-assembled quantum dots
• Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots
• Optical Read-Out and Initialization of an Electron Spin in a Single Quantum Dot
• Pump-Probe Faraday Rotation and Ellipticity in an Ensemble of Singly Charged Quantum Dots
• Spin coherence of a two-dimensional electron gas induced by resonant excitation of trions and excitons in CdTe/(Cd,Mg)Te quantum wells
• Spin coherence of holes in GaAs/AlGaAs quantum wells
• Geometrical spin dephasing in quantum dots
• Robust manipulation of electron spin coherence in an ensemble of singly charged quantum dots

Cited by in corpus (6)

• Coherent spin dynamics of electrons and excitons in nanostructures
• Coherent spin dynamics of electrons and holes in semiconductor quantum wells and quantum dots under periodical optical excitation: resonant spin amplification versus spin mode-locking
• Decoherence-assisted initialization of a resident hole spin polarization in a two-dimensional hole gas
• Optical initialization of hole spins in p-doped quantum dots: orientation efficiency and loss of coherence
• Spin dynamics in p-doped semiconductor nanostructures subject to a magnetic field tilted from the Voigt geometry
• Spin dynamics and magneto-optical response in charge-neutral tunnel-coupled quantum dots