Optically detected nuclear quadrupolar interaction of 14N in nitrogen-vacancy centers in diamond

Abstract

We report sensitive detection of the nuclear quadrupolar interaction of the 14N nuclear spin of the nitrogen-vacancy (NV) center using the electron spin echo envelope modulation technique. We applied a weak transverse magnetic field to the spin system so that certain forbidden transitions became weakly allowed due to second-order effects involving the nonsecular terms of the hyperfine interaction. The weak transitions cause modulation of the electron spin-echo signal, and a theoretical analysis suggests that the modulation frequency is primarily determined by the nuclear quadrupolar frequency; numerical simulations confirm the analytical results and show excellent quantitative agreement with experiments. This is an experimentally simple method of detecting quadrupolar interactions, and it can be used to study spin systems with an energy structure similar to that of the nitrogen vacancy center.

18 pages, 4 figures

References in corpus (5)

• High-sensitivity diamond magnetometer with nanoscale resolution
• Coherence of Nitrogen-Vacancy Electronic Spin Ensembles in Diamond
• Ab initio supercell calculations on nitrogen-vacancy center in diamond: its electronic structure and hyperfine tensors
• Single-spin magnetometry with multi-pulse sensing sequences
• Nuclear spin pair coherence in diamond for atomic scale magnetometry

Cited by in corpus (2)

• Optical detection of paramagnetic defects in diamond using off-resonance excitation of NV centers
• Principles and Techniques of the Quantum Diamond Microscope