Model of quantum diamond (IMAGE) DOE/Princeton Plasma Physics Laboratory Caption This model of quantum diamond shows the carbon atoms in black. The purple ball represents the nitrogen, while the blue ball represents an empty spot in the lattice. Together, the nitrogen and empty space create the nitrogen-vacancy (NV) center used in quantum applications. Credit Michael Livingston / PPPL Communications Department Usage Restrictions Credit must be given to the creator. License CC BY Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.