Two-Photon Coherent Spin Flip and Polarization Rotation of Excitons in Quantum Dots

Original Paper

Abstract

It is shown that the spin orientation and polarization of an exciton confined in a QD can be controlled via two-photon transitions, by virtually coupling the single-exciton states to the detuned ground and biexciton states. Furthermore, phonon-induced dephasing leading to loss of fidelity in the two-photon optical control schemes is studied. Exciton spin flip can be performed with errors as low as 10−3.

Keywords

Quantum dot Spin Decoherence Coherent control 

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Institute of PhysicsWrocław University of TechnologyWrocławPoland

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