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Voltage-tunable singlet-triplet transition in lateral quantum dots

Jordan Kyriakidis, M. Pioro-Ladriere, M. Ciorga, A. S. Sachrajda, P. Hawrylak

cond-mat.mes-hallarXiv:cond-mat/0111543

Abstract

Results of calculations and high source-drain transport measurements are presented which demonstrate voltage-tunable entanglement of electron pairs in lateral quantum dots. At a fixed magnetic field, the application of a judiciously-chosen gate voltage alters the ground-state of an electron pair from an entagled spin singlet to a spin triplet.

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