Quantimetrologie
Quantimetrologie is a field at the intersection of quantum physics and metrology, dedicated to using quantum resources to enhance measurement precision across quantities such as time, frequency, magnetic fields, and displacement. It encompasses both theory and experiment and aims at understanding fundamental limits as well as developing practical sensing devices.
The core idea is that quantum effects like entanglement and squeezing can surpass classical precision. The
Common methods include interferometric sensing with photonic or atomic systems, generation of squeezed or entangled states,
Platforms include trapped ions, cold atoms in optical lattices, nitrogen-vacancy centers in diamond, superconducting circuits, and
History and status: origins in quantum noise and quantum-enhanced measurements, with pivotal work by Caves (1981)
See also: Quantum metrology, Quantum sensing, Precision measurement.