Electrical charging of a single quantum dot by a spin polarized electron

Ghali, M.; Kümmell, T.; Wenisch, J.; Brunner, K.; Bacher, G.
August 2008
Applied Physics Letters;8/18/2008, Vol. 93 Issue 7, p073107
Academic Journal
Voltage controlled electrical charging of a single InAs quantum dot by a spin polarized electron from a ZnMnSe spin aligner is presented, and the spin information is read out optically. We demonstrate that the characteristic single quantum dot photoluminescence polarization pattern of the negative trion and the neutral exciton lines directly reflects the spin state of the electrically injected electron.


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