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  • Title: Coherent control of a single electron spin with electric fields.
    Author: Nowack KC, Koppens FH, Nazarov YV, Vandersypen LM.
    Journal: Science; 2007 Nov 30; 318(5855):1430-3. PubMed ID: 17975030.
    Abstract:
    Manipulation of single spins is essential for spin-based quantum information processing. Electrical control instead of magnetic control is particularly appealing for this purpose, because electric fields are easy to generate locally on-chip. We experimentally realized coherent control of a single-electron spin in a quantum dot using an oscillating electric field generated by a local gate. The electric field induced coherent transitions (Rabi oscillations) between spin-up and spin-down with 90 degrees rotations as fast as approximately 55 nanoseconds. Our analysis indicated that the electrically induced spin transitions were mediated by the spin-orbit interaction. Taken together with the recently demonstrated coherent exchange of two neighboring spins, our results establish the feasibility of fully electrical manipulation of spin qubits.
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