The $N_2V$ color center: a ubiquitous visible and near-infrared-II
quantum emitter in nitrogen-doped diamond
The $N_2V$ color center: a ubiquitous visible and near-infrared-II
quantum emitter in nitrogen-doped diamond
Photoluminescent defects in diamond, like the nitrogen-vacancy (NV) color center, are at the forefront of emerging optical quantum technologies. Most emit in the visible and near-infrared spectral region below 1000 nm (NIR-I), limiting their applications in photonics, fiber communications, and biology. Here, we show that the nitrogen-vacancy-nitrogen ($N_2V$) center, which …