title: Gigahertz electron spin manipulation using voltage-controlled g-tensor modulation.
abstract: We present a scheme that enables gigahertz-bandwidth three-dimensional control of electron spins in a semiconductor heterostructure with the use of a single voltage signal. Microwave modulation of the Landé g tensor produces frequency-modulated electron spin precession. Driving at the Larmor frequency results in g-tensor modulation resonance, which is functionally equivalent to electron spin resonance but without the use of time-dependent magnetic fields. These results provide proof of the concept that quantum spin information can be locally manipulated with the use of high-speed electrical circuits.
authors.affiliation: Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106, USA.
authors.forename: Y
authors.initials: Y
authors.lastname: Kato
authors.forename: R C
authors.initials: RC
authors.lastname: Myers
authors.forename: D C
authors.initials: DC
authors.lastname: Driscoll
authors.forename: A C
authors.initials: AC
authors.lastname: Gossard
authors.forename: J
authors.initials: J
authors.lastname: Levy
authors.forename: D D
authors.initials: DD
authors.lastname: Awschalom