University at Buffalo Study Decodes Quantum Material’s ‘Optical Dingerprints’

Insider Brief

• A University at Buffalo-led team predicted optical fingerprints for 10 atomic defects in hexagonal boron nitride, potentially helping scientists identify defects useful for quantum technologies.
• The simulations showed that defect composition and atomic arrangement can produce distinct responses in the intensity and polarization of light emitted at double or triple the incoming laser’s frequency.
• The findings could guide experimental identification and engineering of defects that emit single photons for future quantum communication and sensing applications.
• Image: An illustration of atomic defects within hexagonal boron nitride alerting light, creating an optical fingerprint. A UB-led study predicted the optical fingerprints for 10 known defects within this material, which could have applications for quantum technologies. (Vasili Perebeinos)

PRESS RELEASE — The tiny atomic defects so important for future quantum technologies can be difficult to spot. Fortunately, they leave behind some clues

The defects can alter how a material responds to light, producing a distinctive optical fingerprint that scientists can measure. 

The challenge is figuring out which fingerprints belong to which defects.