B. Ozturk
Morgan State University,
United States
Keywords: NV diamond, brain imaging, compact quantum sensors
Summary:
Quantum sensing using nitrogen-vacancy (NV) centers in diamond enables the detection of ultra-small changes in temperature, strain, and electromagnetic fields. While opportunities remain for improving sensitivity and expanding applications, particularly in quantum computing, the use of NV centers in bulk diamond for sensing is a relatively mature technology, with several commercial products already on the market. We have developed a battery-operated, handheld compact quantum sensors (CQS) based on bulk NV diamond for magnetic field detection. This device was optimized using machine learning algorithms to enhance performance. The CQS device's rapid, feature-rich data acquisition, combined with our innovative machine learning approach, provides a unique and efficient solution by enabling the direct measurement of both the magnetic field magnitude and its vectorial components. We have also developed compact, NV-diamond–based brain-imaging prototypes with potential to enable the noninvasive detection of extracranial vector magnetic fields produced by neural activity.