Published May 8, 2026
Summary: A highly robust quantum sensor measures magnetic fields by rapidly toggling nuclear spins between two stable states, using the differential signal to naturally cancel out environmental noise and vibrations without needing external shielding.
Applications:
- GPS-denied passive navigation
- Next-generation nanoscale NMR
- Precision nuclear gyroscopes
- Particle accelerator magnetic diagnostics
Advantages/Benefits:
- Intrinsic environmental noise immunity
- Broadband, tuning-free sensing
- High interference suppression
- Elimination of bulky external shielding
Background:
High-precision magnetic field measurements have long been restricted to quiet, lab-like settings because quantum sensors are extremely sensitive to environmental noise—vibrations, temperature changes, and background fields ruin their accuracy. Existing solutions rely on bulky, complex external shielding, severely limiting real-world deployment.
Technology Overview:
Berkeley Lab scientists have developed a quantum magnetometry method that uses internal modulation by rapidly toggling the sensor’s nuclear spins between two stable magnetic states, a process that creates a self-referencing, differential signal that naturally cancels out common-mode noise, including vibration and temperature fluctuation. This intrinsic resilience provides comprehensive immunity to environmental and control disturbances, rejecting interference by over 1,000-fold.
The core advantage is the elimination of bulky external shielding and complex compensation systems. This built-in robustness delivers high-fidelity, broadband (DC fields and AC fields up to 1.25 kHz in a test system; potentially higher) magnetic sensing perfect for harsh, real-world applications.
Development Stage: TRL 4: system validation in laboratory environment
Inventors:
Status: Patent pending
Opportunities: Available for licensing and / or collaborative research
