Lithographically engineered shallow nitrogen-vacancy centers in diamond for external nuclear spin sensing

Ryosuke Fukuda, Priyadharshini Balasubramanian, Itaru Higashimata, Godai Koike, Takuma Okada, Risa Kagami, Tokuyuki Teraji, Shinobu Onoda, Moriyoshi Haruyama, Keisuke Yamada, Masafumi Inaba, Hayate Yamano, Felix M. Stürner, Simon Schmitt, Liam P. McGuinness, Fedor Jelezko, Takeshi Ohshima, Takahiro Shinada, Hiroshi Kawarada, Wataru KadaOsamu Hanaizumi, Takashi Tanii, Junichi Isoya

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3 Citations (Scopus)

Abstract

The simultaneous control of the number and position of negatively charged nitrogen-vacancy (NV) centers in diamond was achieved. While single near-surface NV centers are known to exhibit outstanding capabilities in external spin sensing, trade-off relationships among the accuracy of the number and position, and the coherence of NV centers have made the use of such engineered NV centers difficult. Namely, low-energy nitrogen implantation with lithographic techniques enables the nanoscale position control but results in degradation of the creation yield and the coherence property. In this paper, we show that low-energy nitrogen ion implantation to a 12C (99.95%)-enriched homoepitaxial diamond layer using nanomask is applicable to create shallow NV centers with a sufficiently long coherence time for external spin sensing, at a high creation yield. Furthermore, the NV centers were arranged in a regular array so that 40% lattice sites contain single NV centers. The XY8-k measurements using the individual NV centers reveal that the created NV centers have depths from 2 to 12 nm, which is comparable to the stopping range of nitrogen ions implanted at 2.5 keV. We show that the position-controlled NV centers are capable of external spin sensing with a ultra-high spatial resolution.

Original languageEnglish
Article number083029
JournalNew Journal of Physics
Volume20
Issue number8
DOIs
Publication statusPublished - 2018 Aug

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Keywords

  • NMR
  • diamond
  • nitrogen-vacancy center
  • noise analysis
  • quantum sensing
  • regular array

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Fukuda, R., Balasubramanian, P., Higashimata, I., Koike, G., Okada, T., Kagami, R., Teraji, T., Onoda, S., Haruyama, M., Yamada, K., Inaba, M., Yamano, H., Stürner, F. M., Schmitt, S., McGuinness, L. P., Jelezko, F., Ohshima, T., Shinada, T., Kawarada, H., ... Isoya, J. (2018). Lithographically engineered shallow nitrogen-vacancy centers in diamond for external nuclear spin sensing. New Journal of Physics, 20(8), [083029]. https://doi.org/10.1088/1367-2630/aad997