Hyperfine-enhanced gyromagnetic ratio of a nuclear spin in diamond

S. Sangtawesin, C. A. McLellan, B. A. Myers, A. C.Bleszynski Jayich, D. D. Awschalom, J. R. Petta

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The nuclear spin gyromagnetic ratio can be enhanced by hyperfine coupling to the electronic spin. Here we show wide tunability of this enhancement on a 15N nuclear spin intrinsic to a single nitrogen-vacancy center in diamond. We perform control of the nuclear spin near the ground state level anti-crossing (GSLAC), where the enhancement of the gyromagnetic ratio from the ground state hyperfine coupling is maximized. We demonstrate a two order of magnitude enhancement of the effective nuclear gyromagnetic ratio compared to the value obtained at 500 G, a typical operating field that is suitable for nuclear spin polarization. Finally, we show that with strong enhancements, the nuclear spin ultimately suffers dephasing from the inhomogeneous broadening of the NMR transition frequency at the GSLAC.

Original languageEnglish (US)
Article number083016
JournalNew Journal of Physics
Volume18
Issue number8
DOIs
StatePublished - Aug 2016

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • Nitrogen vacancy center
  • Nuclear spin
  • quantum control

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    Sangtawesin, S., McLellan, C. A., Myers, B. A., Jayich, A. C. B., Awschalom, D. D., & Petta, J. R. (2016). Hyperfine-enhanced gyromagnetic ratio of a nuclear spin in diamond. New Journal of Physics, 18(8), [083016]. https://doi.org/10.1088/1367-2630/18/8/083016