Optical RKKY Interaction between Charged Semiconductor Quantum Dots

C. Piermarocchi; D. G. Steel; L. J. Sham; Pochung Chen

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Optical RKKY Interaction between Charged Semiconductor Quantum Dots

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arxiv cond-mat/0202331 v4 pith:HMDOCI3I submitted 2002-02-20 cond-mat quant-ph

C. Piermarocchi , Pochung Chen , L. J. Sham , D. G. Steel This is my paper · ORCID

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We show how a spin interaction between electrons localized in neighboring quantum dots can be induced and controlled optically. The coupling is generated via virtual excitation of delocalized excitons and provides an efficient coherent control of the spins. This quantum manipulation can be realized in the adiabatic limit and is robust against decoherence by spontaneous emission. Applications to the realization of quantum gates, scalable quantum computers, and to the control of magnetization in an array of charged dots are proposed.

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