Complete ultrafast optical coherent control and spin echo of single InAs quantum dot spins

ORAL

Abstract

We report on recent progress on the complete ultrafast optical coherent control of individual InAs quantum dot spin qubits. We demonstrate Rabi-oscillations and Ramsey-fringes, and implement a spin echo to overcome time-averaged dephasing.\footnote{D. Press, K. De Greve, P. McMahon \textit{et al.}, Nat. Phot. \textbf{4}, 367 (2010)} We probe the hyperfine interaction of a single spin using optical pulse control. Interesting non-Markovian dynamics could be observed in the single electron spin free-induction decay, resulting from feedback between the strong electron spin Overhauser shift and spin dependent nuclear relaxation.\footnote{T. D. Ladd, D. Press, K. De Greve \textit{et al.}, Phys. Rev. Lett. 105, 107401 (2010)}

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Authors

  • Kristiaan De Greve

    • Stanford University
    • Ginzton Labs, Stanford University

  • Peter McMahon

    • Stanford University
    • Ginzton Labs, Stanford University

  • David Press

    • Ginzton Labs, Stanford University

  • Thaddeus Ladd

    • Ginzton Labs, Stanford University and National Institute of Informatics (NII), Tokyo

  • Christian Schneider

    • Technische Physik, Physikalisches Institut, Wilhelm Conrad R\"ontgen Research Center for Complex Material Systems, Universit\"at W\"urzburg

  • Dirk Bisping

    • Technische Physik, Physikalisches Institut, Wilhelm Conrad R\"ontgen Research Center for Complex Material Systems, Universit\"at W\"urzburg

  • Martin Kamp

    • Technische Physik, Physikalisches Institut, Wilhelm Conrad R\"ontgen Research Center for Complex Material Systems, Universit\"at W\"urzburg

  • Lukas Worschech

    • Technische Physik, Physikalisches Institut, Wilhelm Conrad R\"ontgen Research Center for Complex Material Systems, Universit\"at W\"urzburg

  • Sven Hoefling

    • Technische Physik, Physikalisches Institut, Wilhelm Conrad R\"ontgen Research Center for Complex Material Systems, Universit\"at W\"urzburg

  • Alfred Forchel

    • Technische Physik, Physikalisches Institut, Wilhelm Conrad R\"ontgen Research Center for Complex Material Systems, Universit\"at W\"urzburg

  • Yoshihisa Yamamoto

    • Ginzton labs, Stanford University and National Institute of Informatics (NII), Tokyo