UV laser pulses reshape some diamond defects while sparing quantum ones
Researchers aimed nanosecond 266-nanometer laser pulses at small regions of a low-nitrogen lab-grown diamond and produced new light-emitting defects (near 563 and 579 nanometers, linked to stray carbon atoms) while the existing nitrogen-vacancy centers used as qubits and sensors stayed largely unchanged, though the atomic mechanism is still unknown and the new defects are not claimed to be qubits.
