title: Multipulse operation and optical detection of nuclear spin coherence in a GaAs/AlGaAs quantum well.
abstract: We demonstrate manipulation of nuclear spin coherence in a GaAs/AlGaAs quantum well by optically detected nuclear magnetic resonance (NMR). A phase shift of the Larmor precession of photoexcited electron spins is detected to read out the hyperfine-coupled nuclear spin polarization. Multipulse NMR sequences are generated to control the population and examine the phase coherence in quadrupolar-split spin-3/2 75As nuclei. The phase coherence among the multilevel nuclear spin states is addressed by application of pulse sequences that are used in quantum gate operations.
authors.affiliation: Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Kondo
authors.forename: M
authors.initials: M
authors.lastname: Ono
authors.forename: S
authors.initials: S
authors.lastname: Matsuzaka
authors.forename: K
authors.initials: K
authors.lastname: Morita
authors.forename: H
authors.initials: H
authors.lastname: Sanada
authors.forename: Y
authors.initials: Y
authors.lastname: Ohno
authors.forename: H
authors.initials: H
authors.lastname: Ohno