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.

*This work is funded by AFOSR, ARO, DARPA, and DOE.

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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