Tunable coupling between two electronic spin qubits in diamond

ORAL

Abstract

Nitrogen-vacancy (NV) color centers in diamond are good candidates for realizing a scalable spin coupled system. For a simple two NV electronic spin interacting system, spin polarization can be transferred from one spin to another spin through the spin dipolar interaction. With two NV electronic spins separated by about 10 nm, and by manipulating an applied magnetic field gradient and a Rabi driving field, we outline how the spin dipolar interaction can be controlled, with observable changes in the dominating interaction dynamics. Furthermore, we discuss how this control scheme can be applied to transfer polarization in a strongly-coupled spin-chain system.

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Authors

  • Junghyun Lee

    • Massachusetts Inst of Tech-MIT

  • Keigo Arai

    • Massachusetts Inst of Tech-MIT
    • Department of Physics, Massachusetts Institute of Technology

  • Huiliang Zhang

    • Harvard-Smithsonian Center for Astrophysics
    • Harvard-Smithsonian Center for Astrophysics and Harvard University
    • Harvard-Smithsonian Center for Astrophysics, Department of Physics, Harvard Unviersity

  • Erik Bauch

    • Harvard University

  • Emma Rosenfeld

    • Harvard University
    • Harvard University Department of Physics
    • Department of Physics, Harvard University

  • Mikael Backlund

    • Harvard-Smithsonian Center for Astrophysics

  • Ronald Walsworth

    • Harvard CfA
    • Harvard-Smithsonian Center for Astrophysics
    • Harvard-Smithsonian Center for Astrophysics and Harvard University
    • Harvard University
    • Harvard-Smithsonian Center for Astrophysics, Department of Physics, Harvard Unviersity