Stimulated Raman spin coherence and spin-flip induced hole burning in charged GaAs quantum dots

Details Stimulated Raman spin coherence and spin-flip induced hole burning in charged GaAs quantum dots Stimulated Raman spin coherence and spin-flip induced hole burning in charged GaAs quantum dots

2007-07-12

arxiv.org/abs/0707.1726v2

Phys. Rev. B 77, 115315 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures

Scientific paper

10.1103/PhysRevB.77.115315

High-resolution spectral hole burning (SHB) in coherent nondegenerate differential transmission spectroscopy discloses spin-trion dynamics in an ensemble of negatively charged quantum dots. In the Voigt geometry, stimulated Raman spin coherence gives rise to Stokes and anti-Stokes sidebands on top of the trion spectral hole. The prominent feature of an extremely narrow spike at zero detuning arises from spin population pulsation dynamics. These SHB features confirm coherent electron spin dynamics in charged dots, and the linewidths reveal spin spectral diffusion processes.

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