Journal
PHYSICAL REVIEW B
Volume 80, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.80.104436
Keywords
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Funding
- RFBR
- RAS
- Deutsche Forschungsgemeinschaft [SPP1285]
- Office of Naval Research
- Alexander-von-Humboldt Foundation
- Dynasty Foundation-ICFPM
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A description of spin Faraday rotation, Kerr rotation and ellipticity signals for single-and multilayer ensembles of singly charged quantum dots (QDs) is developed. The microscopic theory considers both the single pump-pulse excitation and the effect of a train of such pulses, which in the case of long resident-electron spin coherence time leads to a stationary distribution of the electron spin polarization. The calculations performed for single-color and two-color pump-probe setups show that the three experimental techniques: Faraday rotation, Kerr rotation, and ellipticity measurements provide complementary information about an inhomogeneous ensemble of QDs. The microscopic theory developed for a three-dimensional ensemble of QDs is shown to agree with the phenomenological description of these effects. The typical time-dependent traces of pump-probe Faraday rotation, Kerr rotation and ellipticity signals are calculated for various experimental conditions.
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