Ultrafast coherent electron spin flip in a modulation-doped CdTe quantum well.
Phys Rev Lett
; 102(23): 237402, 2009 Jun 12.
Article
em En
| MEDLINE
| ID: mdl-19658972
ABSTRACT
We report the experimental realization of coherent electron spin flip in a modulation-doped CdTe quantum well. Coherent spin rotation is realized with an off-resonant laser pulse, which induces a polarization-dependent optical Stark shift in the trion resonance. Complete electron spin flip is made possible by a laser pulse designed to avoid excessive excitations of nearby exciton resonances and minimizes detrimental many-body effects. These results demonstrate an effective approach for ultrafast optical spin control in a complex spin system.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article