We study exciton spin relaxation in single semiconductor quantum dots using non-linear resonant optical control. Experiments reveal two distinct channels for spin relaxation, external and internal, ruling out universal freezing of exciton spin relaxation.
© 2006 Optical Society of America
Q. Wang, A. Muller, M. Cheng, H. Zhou, P. Bianucci, and C. Shih, "Internal and External Polarization Memory Loss in Single Quantum Dots," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2006), paper QTuK1.
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