Oxygenated (113) diamond surface for nitrogen-vacancy quantum sensors with preferential alignment and long coherence time from first principles

ORAL

Abstract

Shallow nitrogen-vacancy (NV) center in diamond is promising in quantum sensing applications however its sensitivity has been limited by surface terminators and defects. There is an immediate quest to find suitable diamond surfaces for NV sensors. In this work, the surface terminators of (113) diamond to host shallow NV centers are studied by means of first principles calculations. Results indicate that complete oxygen termination of (113) diamond creates positive electron affinity with no surface states in-gap levels. Combining this with the ~73% preferential alignment of as-grown NV centers in (113) oriented diamond, oxygenated (113) diamond is presently supposed to be the most prospective host for NV quantum sensors.

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Presenters

  • SONG LI

    Department of Mechanical Engineering, City University of Hong Kong

Authors

  • SONG LI

    Department of Mechanical Engineering, City University of Hong Kong

  • Jyh-Pin Chou

    Department of Mechanical Engineering, City University of Hong Kong

  • Jie Wei

    Department of Mechanical Engineering, City University of Hong Kong

  • Minglei Sun

    School of Mechanical Engineering, Southeast University

  • Alice Hu

    Department of Mechanical Engineering, City University of Hong Kong

  • Adam Gali

    Hungarian Academy of Sciences, Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, Wigner Research Centre for Physics