Presentation Information
[1P35]Creation of nitrogen-vacancy centers in nanodiamonds applicable for quantum sensing
*Kazumi Abe1, Ken Sekiguchi1, Ryota Nomura1, Arisa Oda1, Keitaro Antoku1, Shuntaro Usui1, Takashi Tanii1 (1. Faculty of Science and Engineering, Waseda University)
Nitrogen-vacancy (NV) centers in nanodiamonds (NDs) have recently attracted attention as a sensor for quantum sensing. NDs are very small biocompatible particle, making them suitable for biotechnological quantum sensing applications. However, fluctuation of NV center characteristics in NDs, such as charge stability and coherence time, hinder such quantum measurements. As the result, only a small portion of NDs can be used in the quantum measurements. We applied not only oxygen annealing but also ozone treatment to NDs and show that such NDs are useful for pulsed ODMR measurements. We will report the effect of the oxygen annealing and the ozone treatment on the charge stability and coherence time extension of NV centers in NDs.