Development of a Compact ODMR-Based Quantum Sensor Using NV Centers in Diamonds

Optically Detected Magnetic Resonance (ODMR) based on nitrogen-vacancy (NV)

centers in diamonds has emerged as a versatile technique for sensing applications due to its

exceptional sensitivity to electric and magnetic fields, as well as temperature variations. The

development of compact and portable devices leveraging this technology holds significant

potential for advancing sensing capabilities in various fields. In this work, we detail the

experimental integration of essential components—namely, a resonance frequency (RF)

antenna, a solenoid, and an LED—into a compact ODMR measurement system. This

integration represents a crucial step toward realizing a portable electron spin-based quantum

sensor. Our results demonstrate the feasibility of miniaturized ODMR systems while maintaining

their performance, thereby offering insights into the practical challenges and design

considerations associated with compact quantum sensors.