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

Tomoki Machida, Tomoyuki Yamazaki, Kenji Ikushima, Susumu Komiyama
2003 Applied Physics Letters  
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.
doi:10.1063/1.1539903 fatcat:csknogpnb5alrfjdlwiipuc4um