India Unveils First Indigenous Quantum Diamond Microscope for Advanced Magnetic Field Imaging
In a groundbreaking development for quantum sensing technology, India has unveiled its first indigenous Quantum Diamond Microscope (QDM). This innovative microscope has been developed by the P-Quest Group at the Indian Institute of Technology (IIT) Bombay under the National Quantum Mission (NQM) initiated by the Department of Science and Technology (DST). The announcement was made during the Emerging Science Technology and Innovation Conclave (ESTIC 2025).
Significance of the Quantum Diamond Microscope
The Quantum Diamond Microscope is designed specifically for dynamic magnetic field imaging, marking a significant milestone in the field of quantum sensing. This achievement has also secured India its first patent in this domain, highlighting the country’s growing capabilities in advanced scientific research.
Key Features of the Quantum Diamond Microscope
The QDM is based on nitrogen-vacancy (NV) centers in diamond, which are atomic-scale defects formed by a nitrogen atom adjacent to a vacancy. These NV centers are known for their robust quantum coherence, even at room temperature, making them exceptionally sensitive to variations in magnetic, electric, and thermal fields.
The technology utilizes spin-dependent fluorescence, which is detected through optically detected magnetic resonance (ODMR). This allows for the optical readout of local magnetic fields, enabling high-resolution imaging capabilities.
Technical Specifications
- Three-Dimensional Imaging: The QDM facilitates three-dimensional magnetic field imaging at the nanoscale.
- Widefield Imaging: By engineering a thin diamond layer with a high density of NV centers, the QDM can perform widefield imaging of dynamic magnetic activity.
- Non-Destructive Evaluation: The microscope is expected to play a crucial role in the non-destructive evaluation of semiconductor chips, allowing for 3D magnetic mapping within encapsulated chips.
Applications and Future Prospects
As the electronics industry increasingly adopts 3D chip architectures, conventional diagnostic tools face challenges in visualizing buried current paths and multilayer charge flow. The QDM offers a direct, high-resolution approach for imaging integrated circuits, batteries, and microelectronic devices.
In alignment with the objectives of the National Quantum Mission, Professor Kasturi Saha and his team aim to integrate the QDM with artificial intelligence (AI) and machine learning (ML)-based computational imaging. This integration is expected to extend the applications of the microscope to various fields, including:
- Chip diagnostics
- Biological imaging
- Geological magnetization studies
Key Figures in the Development
The unveiling of the Quantum Diamond Microscope was attended by notable figures, including:
- Dr. Jitendra Singh: Union Minister for Science and Technology
- Prof. Ajay K. Sood: Principal Scientific Adviser
- Prof. Abhay Karandikar: Secretary of the Department of Science and Technology
Conclusion
The development of the Quantum Diamond Microscope represents a significant advancement in India’s scientific landscape, showcasing the country’s potential in cutting-edge technology. As research and applications in quantum sensing continue to evolve, the QDM is poised to make substantial contributions across various sectors, from electronics to healthcare.
Note: This article provides an overview of the Quantum Diamond Microscope developed in India, highlighting its significance, features, applications, and the key figures involved in its development.
