TITLE

Coherent control of nuclear-spin system in a quantum-Hall device

AUTHOR(S)
Machida, Tomoki; Yamazaki, Tomoyuki; Ikushima, Kenji; Komiyama, Susumu
PUB. DATE
January 2003
SOURCE
Applied Physics Letters;1/20/2003, Vol. 82 Issue 3, p409
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Coherent control of local nuclear spins in a solid-state device is demonstrated. By unequally populating spin-resolved quantum-Hall edge channels, nuclear spins in a limited region along the edge channels are strongly polarized via the hyperfine interaction. Pulsed rf magnetic fields, generated by a built-in micrometal strip, cause the nuclear-spin state to evolve coherently. The nuclear-spin state reached during the pulse duration is finally read out via the edge-channel conductance, which shows Rabi oscillation.
ACCESSION #
8926060

 

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