IIT Bombay develops India’s first QDM for nanoscale magnetic imaging

neuroscience & materials research
neuroscience & materials research

NOV 12: Under the National Quantum Mission (NQM) of the Department of Science and Technology (DST), the P-Quest Group at IIT Bombay has developed India’s first indigenous Quantum Diamond Microscope (QDM) for dynamic magnetic field imaging—marking a significant breakthrough in quantum sensing and earning the nation its first patent in this emerging field.

The QDM was formally announced during the Emerging Science Technology and Innovation Conclave (ESTIC 2025) in the presence of Union Minister for Science and Technology Dr. Jitendra Singh, Principal Scientific Adviser Prof. Ajay K. Sood, and DST Secretary Prof. Abhay Karandikar.

Developed by the team led by Prof. Kasturi Saha, the QDM is based on nitrogen-vacancy (NV) centers in diamond, which maintain quantum coherence even at room temperature. These NV centers allow detection of magnetic, electric, and thermal variations through spin-dependent fluorescence, enabling nanoscale visualization of dynamic magnetic fields.

This breakthrough technology has vast potential applications in neuroscience, materials research, and semiconductor diagnostics, particularly in mapping buried current paths within advanced 3D chip architectures.

The team aims to further enhance the system by integrating AI and machine learning for advanced computational imaging. The innovation aligns with the goals of the National Quantum Mission to establish India as a global leader in quantum technologies and pave the way for cutting-edge applications in biological imaging, geological studies, and next-generation electronics.