Optical control of a Mn spin embedded in a quantum dot

We demonstrate a high degree of an optical spin preparation of a single Mn atom embedded in a CdTe/ZnTe quantum dot (QD). Due to the strong exchange interaction of the manganese atom with an exciton injected into the QD the spin orientation can be achieved by quasi-resonant or fully-resonant optical...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 210; no. 1; p. 012038
Main Authors Kolodka, R S, Besombes, L, Gall, C Le, Boukari, H, Cibert, J, Mariette, H
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.02.2010
IOP Science
Subjects
Cadmium tellurides
Electron spin
Electrons
Excitons
Holes (electron deficiencies)
Manganese
Optical control
Optical pumping
Physics
Quantum dots
Spin dynamics
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Summary:We demonstrate a high degree of an optical spin preparation of a single Mn atom embedded in a CdTe/ZnTe quantum dot (QD). Due to the strong exchange interaction of the manganese atom with an exciton injected into the QD the spin orientation can be achieved by quasi-resonant or fully-resonant optical creation of the polarized electron-hole pairs. A measured spin memory of the isolated Mn atom, in most of the cases, is in the microsecond range, and depends on the built-in strain in the quantum dot. During the resonant optical pumping process exciton spin-flip can occur without a change of the Mn spin providing a way to directly read the dynamics of the pumped spin state. The manganese spin orientation is achieved in a few tens of ns.
ISSN:1742-6596
1742-6588
1742-6596
1742-6588
DOI:10.1088/1742-6596/210/1/012038