<p>➀ Fraunhofer IAF showcases a compact diamond-based quantum magnetometer with high sensitivity and robustness at World of Quantum 2025;</p><p>➁ The sensor enables precise measurements for applications in biomedicine, navigation, and geology, including GNSS-free positioning and underground resource detection;</p><p>➂ Future goals include further miniaturization, sub-picotesla sensitivity, and scaling diamond wafers to 4 inches for industrial production.</p>