Gigahertz electron spin manipulation using voltage-controlled g-tensor modulation |
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Authors: | Kato Y Myers R C Driscoll D C Gossard A C Levy J Awschalom D D |
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Affiliation: | Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106, USA. |
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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. |
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