Optical pumping of quantum dot nuclear spins

A. Imamoglu; E. Knill; L. Tian; P. Zoller

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Optical pumping of quantum dot nuclear spins

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arxiv cond-mat/0303575 v1 pith:IQ3RNBGU submitted 2003-03-27 cond-mat.mes-hall quant-ph

A. Imamoglu , E. Knill , L. Tian , P. Zoller This is my paper · ORCID

classification cond-mat.mes-hallquant-ph

keywords nuclearspinsquantumcoolingschemeall-opticalanalyzedatomic

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An all-optical scheme to polarize nuclear spins in a single quantum dot is analyzed. The hyperfine interaction with randomly oriented nuclear spins presents a fundamental limit for electron spin coherence in a quantum dot; by cooling the nuclear spins, this decoherence mechanism could be suppressed. The proposed scheme is inspired by laser cooling methods of atomic physics and implements a "controlled Overhauser effect" in a zero-dimensional structure.

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