The study of the efficiency of nitrogen to NV-center conversion in high nitrogen content samples

Abstract

The nitrogen-vacancy color center in diamond is one of the most important systems in the fast-growing field of sensing. This color centers are used in both high-resolution and high-sensitivity sensors. However, techniques for quick and efficient formations of this color center are still in the development stage. In this paper, we present a study on the influence of the electron irradiation dose on the conversion of substitutional nitrogen into $\text{N}{\text{V}}^{-}$ centers. The study was done on diamonds that were highly enriched with nitrogen (~100 ppm), which on one hand should maximize the effect of irradiation, and on another be of interest for high-sensitivity magnetometers. The maximum achieved conversion efficiency was as high as $37\pm 3.7$, with no observed saturation on the electron dose even with the simplest annealing procedure. The measurements of the corresponding dephasing time made it possible to estimate for shot-noise limited sensitivity per unit volume of a stationary field sensor with such a diamond to be $9\pm 1\times {10}^{-14}\text{T}/\sqrt{\text{Hz}\cdot \text{m}{\text{m}}^{-3}}$.

References in corpus (5)

• High-sensitivity diamond magnetometer with nanoscale resolution
• Dynamic strain-mediated coupling of a single diamond spin to a mechanical resonator
• Qubit teleportation between non-neighboring nodes in a quantum network
• Efficient Conversion of Nitrogen to Nitrogen-Vacancy Centers in Diamond Particles with High-Temperature Electron Irradiation
• Impact of helium ion implantation dose and annealing on dense near-surface layers of NV centers

Cited by in corpus (1)

• An efficient and low-cost method to create high-density nitrogen-vacancy centers in CVD diamond for sensing applications