The sensitivity of the nitrogen-vacancy (NV) color centers in diamond-based magnetometers strongly depends on the number of NV centers involved in the measurement. Unfortunately, an increasing concentration of NV centers leads to decreases of their dephasing and coherence time if the nitrogen content exceeds a certain threshold level (approximately 1017cm−3). Here, we demonstrate that this increased dephasing can be efficiently compensated by postprocessing procedures in the vicinity of the threshold concertation, thus extending possible useful concentrations on NV centers with the maximum possible decoherence time in diamonds with a natural carbon content.
@article{arxiv.2004.10646,
title = {Optimization of the coherence properties of diamond samples with an intermediate concentration of NV centers},
author = {O. R. Rubinas and V. V. Soshenko and S. V. Bolshedvorskii and A. I. Zeleneev and A. S. Galkin and S. A. Tarelkin and S. Y. Troschiev and V. V. Vorobyov and V. N. Sorokin and A. A. Sukhanov and V. G. Vins and A. N. Smolyaninov and A. V. Akimov},
journal= {arXiv preprint arXiv:2004.10646},
year = {2021}
}