Ultraviolet laser pulses engineer diamond defects selectively while leaving quantum qubits intact
Researchers published findings in the journal Diamond and Related Materials on October 10, 2026, regarding the use of ultraviolet laser pulses to modify diamond defects.
Selective defect engineering with lasers
Scientists irradiated localized regions of a single-crystal chemical vapor deposition diamond with 266-nanometer ultraviolet laser pulses. This process allows for the creation or modification of specific atomic-scale defects without disturbing nearby ones. The study focuses on nitrogen-vacancy centers which serve as quantum bits and sensitive sensors.
Control over defect populations
Creating one type of defect can affect other defects located in the vicinity within the crystal lattice. Researchers needed new methods to control individual defect populations more selectively for useful devices. The work explores whether ultraviolet pulses provide the necessary control for quantum technologies.
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