Creating Polarization-Entangled Photon Pairs from a Semiconductor Quantum Dot Using the Optical Stark Effect

Author(s): Andreas Muller, Wei Fang, John Lawall, and Glenn S. Solomon
In typical epitaxial quantum dots (QDs) the ideally degenerate optical excitons are energy split, preventing the formation of two-photon entanglement in a biexciton decay. We use an external field, here a continuous-wave laser tuned to the QD in the ac Stark limit, to cancel the splitting and creat...
[Phys. Rev. Lett. 103, 217402] Published Fri Nov 20, 2009


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