Electron-nuclear spin control in charged semiconductor quantum dots by electrical currents through micro-coils

We have fabricated micrometer-sized single-turn coils on top of charged CdSe/ZnSe quantum dot heterostructures by lithographical techniques. Current injection creates magnetic fields in the some 10 mT range, strong enough to modulate the hyperfine interaction. The very low coil inductance allows for...

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Veröffentlicht in:Applied physics letters 2010-04, Vol.96 (15), p.151908-151908-3
Hauptverfasser: Kim, Jungtaek, Puls, J., Chen, Y. S., Bacher, G., Henneberger, F.
Format: Artikel
Sprache:eng
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Zusammenfassung:We have fabricated micrometer-sized single-turn coils on top of charged CdSe/ZnSe quantum dot heterostructures by lithographical techniques. Current injection creates magnetic fields in the some 10 mT range, strong enough to modulate the hyperfine interaction. The very low coil inductance allows for generation of fast field transients. We demonstrate local control of the resident electron spin as well as read-out of the nuclear spin state on the 10 ns time scale by electrical current pulses.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3373591