Coherent single electron spin control in a slanting Zeeman field

Yasuhiro Tokura, Wilfred Gerard van der Wiel, Toshiaki Obata, Seigo Tarucha

    Research output: Contribution to journalArticleAcademicpeer-review

    229 Citations (Scopus)
    270 Downloads (Pure)


    We consider a single electron in a 1D quantum dot with a static slanting Zeeman field. By combining the spin and orbital degrees of freedom of the electron, an effective quantum two-level (qubit) system is defined. This pseudospin can be coherently manipulated by the voltage applied to the gate electrodes, without the need for an external time-dependent magnetic field or spin-orbit coupling. Single-qubit rotations and the controlled-NOT operation can be realized. We estimated the relaxation (T1) and coherence (T2) times and the (tunable) quality factor. This scheme implies important experimental advantages for single electron spin control.
    Original languageUndefined
    Pages (from-to)047202
    Number of pages4
    JournalPhysical review letters
    Issue numberIEEE Produ
    Publication statusPublished - 3 Feb 2006


    • SMI-NE: From 2006 in EWI-NE
    • IR-59088
    • METIS-238794
    • EWI-9471

    Cite this