Laser Intracavity Magnetometry for Quantum Sensing
Analysis
Key Takeaways
- •Introduces Laser Intracavity Absorption Magnetometry (LICAM) for sensitive magnetometry.
- •Utilizes nitrogen-vacancy (NV) centers in diamond and a diode laser.
- •Achieves significant improvements in optical contrast and magnetic sensitivity.
- •Projects shot-noise-limited sensitivity in the pT/Hz^(1/2) range, with potential for fT/Hz^(1/2) sensitivity.
- •Applicable to a broader class of optical quantum sensors and operates under ambient conditions.
“Near the lasing threshold, we achieve a 475-fold enhancement in optical contrast and a 180-fold improvement in magnetic sensitivity compared with a conventional single-pass geometry.”