Optomechanical Magnetometry with a Macroscopic Resonator
Optomechanical Magnetometry with a Macroscopic Resonator
Whispering galley mode resonators have many applications, including photonic circuitry, optical clocks, and sensing. They can be used as magnetometers that operate in ambient conditions and require no cryogenics, but so far they have been limited to sensitivities above 100 nT in the crucial 1--1000 Hz frequency range. The authors …