Spin-dependent Rabi oscillations in single quantum=0D dot

TL;DR

This paper investigates spin-dependent Rabi oscillations in a single quantum dot under ultrafast elliptically polarized optical excitation, revealing unique temporal behaviors including oscillation beating and spin quenching effects.

Contribution

It introduces a non-Markovian model for exciton dynamics in quantum dots and analyzes spin-dependent Rabi oscillations with novel findings on their temporal evolution.

Findings

Observation of beating in Rabi oscillations with elliptical polarization

Identification of spin quenching due to spin-orbit splitting

Analysis of population and spin dynamics in quantum dots

Abstract

Ultrafast optical pump of exciton resonance in single quantum dot by an elliptically polarized laser pulse is described by the non-Markov balance equations. Population and spin dynamics are investigated and spin-dependent Rabi oscillations are considered for the case of a flat quantum dot, with the lateral size greater than the height. The following peculiarities of temporal evolution have been found: a) a beating of Rabi oscillations under an elliptically polarized pump and b) quenching of spin orientation due to a spin-orbit splitting effect.