Adaptive, symmetry-informed Bayesian metrology for precise quantum technology measurements

Understand

High precision measurements are essential to solve major scientific and technological challenges, from gravitational wave detection to healthcare diagnostics.

• Quantum sensing delivers greater precision, but an in-depth optimisation of measurement procedures has been overlooked.
• Here we present a systematic strategy for parameter estimation in the low-data limit that integrates experimental control parameters and natural symmetries.
• The method is guided by a Bayesian quantifier of precision gain, enabling adaptive optimisation tailored to the experiment.