Nanofabrication of single spins and spin arrays in diamond

ORAL

Abstract

The properties of isolated nitrogen vacancy (NV) centers in diamond make them a promising solid-state qubit candidate for spin-based quantum information processing. However, scaling this system to multi-qubit NV center devices requires methods to accurately place single NV centers in pure diamond substrates. To address this challenge we have developed a method for fabricating single NV centers on 50 nm length scales based on ion implantation and electron beam lithography.\footnote{D. M. Toyli \emph{et al.}, Nano Lett. 10, 3168 (2010).} Secondary ion mass spectroscopy measurements facilitate depth profiling of the implanted nitrogen to provide three-dimensional characterization of the NV center spatial distribution. Finally, electron spin resonance measurements of single NV centers, including temperature-dependent spin coherence measurements, suggest a pathway for optimizing single spin coherence in future devices.

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Authors

  • D.M. Toyli

    Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA

  • Gregory Fuchs

    Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106, Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA, Center for Spintronics and Quantum Computation, University of California, Santa Barbara

  • D.J. Christle

    Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA

  • D.D. Awschalom

    Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA 93106, University of California, Santa Barbara, University of California Santa Barbara, Center for Spintronics and Quantum Computation, University of California, Santa Barbara, CA, Center for Spintronics and Quantum Computation, University of California, Santa Barbara, Physics Dept., University of California, Santa Barbara CA 93106

  • Christoph Weis

    Lawrence Berkeley National Laboratory, Berkeley, CA, Lawrence Berkeley National Laboratory

  • Thomas Schenkel

    Lawrence Berkeley National Laboratory, Lawrence Berkeley National Laboratory, Berkeley, CA