Quantum Diamond Microscopy (QDM)

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News: India’s first indigenous Quantum Diamond Microscope was announced under the National Quantum Mission at (Emerging Science Technology and Innovation Conclave) ESTIC 2025.

About Quantum Diamond Microscopy (QDM)

Quantum Diamond Microscopy (QDM)
Source – PIB + Swarajya Mag
  • A Quantum Diamond Microscope is a quantum imaging system that uses nitrogen-vacancy centres in a thin diamond layer to optically map dynamic, three-dimensional magnetic fields at the nanoscale.
  • India’s first patent: The QDM marks a milestone in quantum sensing and has earned India its first patent in this domain.
  • Developed by : It has been developed by the P-Quest Group at IIT Bombay under the National Quantum Mission.
  • Technology Used
    • The microscope uses nitrogen-vacancy (NV) centres in diamond, which are atomic-scale defects formed by a nitrogen atom next to a vacancy.
    • These NV center show strong quantum coherence at room temperature and are highly sensitive to magnetic, electric, and thermal variations.
    • The system uses optically detected magnetic resonance to read local magnetic fields.
  • Uses
    • It helps in neuroscience and materials research by mapping dynamic magnetic activity.
    • It supports non-destructive evaluation of semiconductor chips, especially in 3D chip architectures.
    • It can be expanded for biological imaging and geological magnetisation studies.
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