NV center is an impurity defective complex in diamond, obtained by irradiating with highenergy electrons samples containing nitrogen in a substituting position and post radiating annealing. NV centers are observed in several charge states negative (zero phonon line at 638 nm), neutral (ZPL at 575 nm), and, possibly, positive (ZPL at 533 nm). NV centers in diamond are candidates for qubits for quantum computing, the basis of high speed magnetometric sensors, sources of single photons, and also emitting centers of optically active laser media.
Pulsed lasers and laser applications AMPL-2021 : the 15th International conference, September 12-17, 2021, Tomsk, Russia : abstracts. Tomsk, 2021. P. 26