What is it about?
We present an all-optical method to measure and compensate for residual magnetic fields present in a cloud of ultracold atoms trapped. Our approach leverages the increased loss from the trapped atomic sample through electromagnetically induced absorption. Modulating the excitation laser provides coherent sidebands, resulting in a Λ-type pump–probe scheme. Scanning an additional magnetic offset field leads to pairs of sub-natural linewidth resonances, whose positions encode the magnetic field in all three spatial directions.
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Why is it important?
Our measurement scheme is readily implemented in typical quantum gas experiments and has no particular hardware requirements.
Read the Original
This page is a summary of: All-optical measurement of magnetic fields for quantum gas experiments, Review of Scientific Instruments, April 2024, American Institute of Physics,
DOI: 10.1063/5.0191479.
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