Circuit design and integration of magnetometer based on nitrogen-vacancy (N-V) centers in diamond

Quantum sensors based on nitrogen-vacancy (NV) centers in diamond represent a highly promising solid-state platform for magnetic field detection. They combine exceptional sensitivity, wide dynamic range, wide operational magnetic field, high sampling rates, robustness, and ability to operate as vector, scalar, AC and DC magnetometers. While their performance has been widely demonstrated on the laboratory scale using complex optical table setups, the technology is not yet completely portable without sacrificing its performance. Significant challenges remain in translating these demonstrations into compact, robust, and user-friendly devices suitable for deployment outside the lab. Integrated circuit (IC) design plays a crucial role in shrinking the size and improving the performance of NV sensors, enabling higher levels of integration, stability, and scalability.  This PhD research will focus on the electronic integration (IC design) and performance optimization of the sensor interface, targeting improvements in sensitivity, range, and overall system efficiency. The project will combine IC analog design with physics and laboratory experiments, offering a unique interdisciplinary training environment. Addressing these challenges is key to unlocking the full potential of NV-based magnetometers for widespread civilian applications, from imaging and navigation to industrial sensing and geoscience.