Fine structure and optical pumping of spins in individual semiconductor quantum dots

Details Fine structure and optical pumping of spins in individual semiconductor quantum dots Fine structure and optical pumping of spins in individual semiconductor quantum dots

2008-09-10

arxiv.org/abs/0809.1838v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1088/0268-1242/23/11/114004

We review spin properties of semiconductor quantum dots and their effect on optical spectra. Photoluminescence and other types of spectroscopy are used to probe neutral and charged excitons in individual quantum dots with high spectral and spatial resolution. Spectral fine structure and polarization reveal how quantum dot spins interact with each other and with their environment. By taking advantage of the selectivity of optical selection rules and spin relaxation, optical spin pumping of the ground state electron and nuclear spins is achieved. Through such mechanisms, light can be used to process spins for use as a carrier of information.

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